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Your daily forecasts from Boards.ie weather forum (NO CHAT)

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  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Monday, 27 August, 2012
    _________________________________

    ALERT for heavy rainfalls in some parts of eastern and southeastern Ireland today valid to 1700h, expect further amounts of 20-30 mms.

    TODAY ... Rain will become heavy at times in eastern and southeastern counties, expect a further 20-30 mms and the risk of spot flooding. Further west, a more showery start with brighter intervals, followed by isolated heavy showers and risk of thunder. Winds moderate southerly veering to southwest 25-35 mph, some higher gusts. Highs near 18 C for most.

    TONIGHT ... A few isolated showers, clearing later, winds steady SW 15-25 mph with some higher gusts. Lows 8-11 C.

    TUESDAY ... Sunny with increasing cloud, outbreaks of heavy showers mainly confined to west, in S-SW winds 15-25 mph. Highs 17-20 C warmest in east.

    WEDNESDAY ... Frequent showers or periods of rain, lows near 11 C and highs near 17 C.

    THURSDAY ... Showers, cool, some clearing later. Lows near 9 C and highs about 16 C.

    OUTLOOK ... Friday to about Tuesday of the following week appear warm and dry at this point. However, now that I'm back, that could change.


    Forecasts for Britain

    A similar pattern can be expected, as systems are fast-moving and moving west to east, with a slight lag for southeast England. Expect some heavy rainfalls to develop across southern Britain later today and tonight, and again on Wednesday.


    Forecasts for North America

    The Gulf coast is bracing for hurricane Isaac (as it should be by landfall on Wednesday morning) and anywhere between New Orleans and northwest Florida are on high alert for a cat-2 hurricane landfall. Today, the strengthening storm will pull away from southern Florida which will mean a rather steady S to SW wind of about 30-50 mph with squally showers for most regions there. Eventually conditions will improve a little in Florida (except for the western panhandle) but wll rapidly deteriorate in the rest of the central Gulf coast which will have some sunshine and humid conditions today. Further north, a weak cold front is bringing a few showers and storms to parts of the east-central U.S. and western Great Lakes. A large area of warm, dry weather sprawls across the central and western states and a weak front is moving inland on the west coast. We are currently seeing a bit of light rain here, the first this month in some cases. The maximum temperatures here all week were around 22-25 C, expecting 20 C on Monday.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Tuesday, 28 August, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Sunny to start, with increasing cloud by afternoon, some showers spreading gradually into western counties, highs 17-20 C (warmest around inland southeast). Winds steady S-SW 20-35 mph in exposed locations.

    TONIGHT ... Frequent showers or periods of rain, 10-15 mms likely. Lows near 12 C. Winds moderate southerly veering southwest later, 15-30 mph.

    WEDNESDAY ... Frequent showers, occasional thunder or hail possible, 15-25 mms of rain on average, some heavier amounts possible central counties. Highs around 17 C.

    THURSDAY ... Morning showers, then partly cloudy, isolated afternoon showers mainly northwest inland regions. Lows near 9 C and highs near 16 C.

    FRIDAY to TUESDAY ... A warm, dry spell still appears likely, with a bit of marine cloud near the west coast at times. Highs 19-22 C in many places and limited coastal cloud or fog.


    Forecasts for Britain

    Showers ending today, then some sunny intervals later, rain again tonight and much of tomorrow with highs today about 17-21 C, overnight lows 9-12 and highs tomorrow near 19 C. Some heavy rainfalls possible in Wales, west Midlands, inland south. Gradual improvements on Thursday, then the warm dry spell likely to dominate from Friday on.


    North American forecasts

    Isaac has been reluctant to reach hurricane intensity despite minimal wind shear and few obstructions in the region, perhaps later today this will occur before landfall tonight cuts off further development. A moderate storm surge and heavy rainfalls are likely (much of the moisture is currently on the south side of the storm). Landfall may take place over far eastern Louisiana but the largest impacts appear destined for the MS coast and Mobile Bay in Alabama.

    Meanwhile, widespread frontal rains have spread into the east-central states and will link up with Isaac by tonight. Otherwise, it is warm and dry across much of the continent especially central regions, with a few scattered monsoon storms over the inland southwest, and weak showery fronts spreading inland across British Columbia into Alberta. Temperatures will be near 32 C in parts of central-western Canada and the northern plains states ahead of a weak frontal trough.

    My local weather on Monday was mostly sunny with patchy high cloud and a pleasant high near 20 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Wednesday, 29 August, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Heavy showers with some thunder and hail will spread across the country, but it may be dry until mid-day in some parts of Leinster. High humidity levels developing giving a warm feel before the showers arrive. Eventually, most places will see 10-20 mms of rain with a slight risk of local flooding most likely in central counties. Highs 16-18 C. Some gusty SW winds and the risk of some squally westerly winds later with gusts to 45 mph.

    TONIGHT ... Showers becoming less frequent, cooler and fresher with winds veering to NW 25-45 mph. Lows 7-10 C.

    THURSDAY ... Variable cloud, passing showers, and a clearing trend for the south and west, in moderate NW winds 20-40 mph. Highs 15-18 C.

    FRIDAY ... Hazy sunshine and warmer in parts of the south, cloudier north with outbreaks of light rain or drizzle, morning lows 5-8 C and highs 17-20 C.

    SATURDAY ... Some sunny intervals, coastal low cloud and drizzle mainly northwest, lows near 7 C and highs near 20 C.

    SUNDAY-MONDAY ... Warm sunny intervals, feeling hot in some inland southern and central counties, highs reaching 23-25 C.

    FURTHER OUTLOOK ... The warm to hot spell could last quite a while into the new month. Our summer's highest temperature contest may not be settled for a while yet. :)


    Forecasts for Britain

    TODAY ... A few heavy showers in Scotland, a dry start in western England and Wales but increasing cloud, evening showers. Morning showers then clearing further east. Highs about 21 C south to 17 C Scotland.

    TONIGHT ... Frequent heavy showers and some thunder, lows 13-16 C.

    THURSDAY ... Showers, isolated hail and thunder, breezy to windy, highs around 17 or 18 C.

    OUTLOOK ... Similar to Ireland with a warm or even hot spell developing.


    Forecasts for North America

    Heavy rains will continue across parts of Louisiana, southern MS and other parts of the southeast states. Storm force winds will gradually relent before the rain stops falling, as remnants of Isaac move further inland. Hot and dry across much of the central and western U.S. and into southern Manitoba, northwestern Ontario, and across the lower Great Lakes into the eastern states, highs near 32 C in the larger cities of the eastern U.S. and 35-40 C in some parts of the central plains states, southwestern U.S.

    My weather on Tuesday was cloudy with light showers (for a change) and highs near 21 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Thursday, 30 August, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Variable cloud, more sunshine south of Limerick to Dublin, passing showers mostly confined to north, and an afternoon clearing trend for the south and west, in moderate NW winds 20-40 mph, becoming less blustery in the south around mid-day. Highs 15-18 C, warmest near south coast.

    TONIGHT ... Clear intervals, cool, lows 4-7 C, temperatures likely to rise in the western half of the country after midnight as cloud moves in, with coastal drizzle (near 10 C). Light winds for most.

    FRIDAY ... Hazy sunshine and warmer in parts of the south, cloudier north with outbreaks of light rain or drizzle, and highs 17-20 C, warmest east and southeast inland.

    SATURDAY ... Some sunny intervals, coastal low cloud and drizzle mainly northwest, lows near 7 C and highs near 20 C.

    SUNDAY-MONDAY ... Warm sunny intervals for parts of the south, feeling hot in some inland southern and central counties, highs reaching 23-25 C. More cloud in west, central and north, highs near 20 C inland and 17-19 C coastal.

    FURTHER OUTLOOK ... The warm to hot spell could last quite a while into the new month in the south, inland. Our summer's highest temperature contest may not be settled for a while yet. Kirk is expected to become a hurricane east of Bermuda this weekend but its further evolution seems most likely to be a rapid weakening in the central Atlantic during the following week with only a limited, if any, effect on Ireland. The next storm that forms south of Kirk might eventually become a player in the eastern Atlantic in about two weeks' time.


    Forecasts for Britain

    TODAY ... Showers, isolated hail and thunder, breezy to windy, highs around 17 or 18 C for most, 19-21 C southeast. Some severe storms are possible in the east Midlands and northeast England.

    TONIGHT ... Gradual clearing, showers ending, lows 7-10 C.

    OUTLOOK ... Similar to Ireland with a warm or even hot spell developing in parts of the south and central England, Wales. More cloud and drizzle in a warm, muggy southwest flow further north. Highs could reach 24-27 C in some parts of southern England during this spell and it could last much of next week.


    Forecasts for North America

    Heavy rains continue today in parts of LA, MS, spreading to AR, TN as weakening Isaac slogs north, soon to be downgraded to a tropical depression. A large area of warm to hot, dry weather holds firm across central and northern parts of the U.S. and adjacent southern Canada. Highs will reach 32-35 C in many places and 35-42 C in some parts of the south-central plains states. Under the cloud and rain it's a muggy 26 C but the main issue there is 100-200 mms of additional rain (the further north this goes, the more it changes from a problem to a blessing to drought-parched regions like the Ohio valley. The rainstorm will probably bring 50-100 mms as far north as Indiana, Ohio and parts of Michigan and southern Ontario by the weekend, which in the U.S. is Labor Day (Monday), in Canada Labour Day obviously quite different. )

    My local weather on Wednesday was cloudy with the odd bright interval and a few sprinkles of rain, looked showery off to the north at times with towering cumulus embedded in a general stratocumulus cloud deck at about 3500' ... the high was about 19 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Friday, 31 August, 2012
    _________________________________

    Astronomy note: Full moon occurs today at 2:59 p.m. IST.


    Forecasts for Ireland

    TODAY ... Mostly cloudy with drizzle or light rain at first, some brighter intervals developing with hazy sunshine possible inland south by afternoon. Warm and humid especially southern and central counties. Rainfalls only about 1-4 mms at most, highs 17-20 C with warmest readings around Laois and Carlow, Tipps and Limerick.

    TONIGHT ... Hazy, some low cloud and drizzle near west coast at times, mild, lows 11-13 C.

    SATURDAY ... Variable cloud at first, then an interval of cloud and drizzle or light rain, possibly missing a few parts of the south but giving 2-5 mms to parts of the north, brighter intervals again late afternoon and evening, warm and humid. Highs 18-22 C.

    SUNDAY ... Morning fog or mist, hazy sunshine developing, warm away from the coasts where some low cloud or fog will be persistent ... lows 11-14 C and highs 19-23 C.

    MONDAY-TUESDAY ... Hazy sunshine inland south, increasing cloud elsewhere, outbreaks of light or moderate rain possible especially for Connacht and west Ulster. Overnight a period of stronger SW winds and rain could brush parts of the northwest, and this risk extends into Tuesday, due to remnants of "Kirk" although this storm could have disintegrated by the time it passes Donegal Bay. Highs on Monday and Tuesday could reach 22-24 C in parts of the south and about 18-21 C elsewhere.

    OUTLOOK ... Further warm and in some parts sunny weather seems likely once this frontal wave containing remnants of Kirk moves past, with higher pressure building up again. Highs could remain in the lower 20s for some, 18 to 21 C in general. It is too soon to speculate on the final stages of expected strong hurricane "Leslie" (already a tropical storm) that appears destined to recurve near Bermuda and pass eastern Canada late next week. It could become a factor late in the week or around the weekend of 8-9 September but about equal chances exist that it might head off further north or recurve more rapidly back to the southeast.


    Forecasts for Britain

    TODAY ... Partly cloudy, isolated showers but mostly dry, highs about 18 C.

    TONIGHT ... Clear intervals but coastal cloud, drizzle, lows 7-10 C.

    FRIDAY to TUESDAY ... Southern regions should be mainly warm and dry with some hazy sunshine breaking through rather widespread mist and cloud, highs about 22-24 C inland. More cloud, drizzle or light rain at times further north, and the risk of a period of stronger winds and rain arriving on Monday night.


    Forecasts for North America

    The heavy rainfalls from "Isaac" will move north into Missouri, Kentucky and southern Illinois-Indiana while tapering off in Arkansas, northern Louisiana and Mississippi. The southeast will have isolated thunderstorms in a warm, humid southerly flow, highs 28-32 C. Warm to hot, and dry further north in the eastern U.S. and Great Lakes where the rain can be expected later in the weekend (eventually tapering off to showers as remnants of the storm reach New York state by Labor Day). Meanwhile, continued very warm to hot and mostly dry central and western regions, with weak fronts bringing a few showers to inland B.C. and western Alberta. A few monsoonal storms will hit Utah and northern Arizona.

    My local weather on Thursday was pleasant with a lot of sunshine and scattered shower clouds off to the north over the mountains. Highs reached about 20 C. Clear skies this evening presented a good view of the rising full moon.

    FACTOID ... With Leslie forming earlier Thursday, this marks the second earliest date for the 12th named storm (since 1870 if you overlook the fact that storms were not named until around 1950), only 1995 managed an earlier "L" storm (Luis) by one day. In 2005 which set most of these records, Katrina was moving inland on the 30th and the L storm had not yet formed although six more storms would quickly follow (Rita was another cat-5 that entered the Gulf in late September; that season eventually ran to 28 named storms). The current count of 8 named storms for August is nearly a record also. The overall intensity of this season has not been as impressive as the frequency.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Saturday, 1 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Hazy sunshine in most regions early, lasting to mid-day in the south and east, becoming partly cloudy then overcast, with an interval of drizzle or light rain, possibly missing a few parts of the south but giving 2-5 mms to parts of the north and west, where brighter intervals could develop again by late afternoon and evening, generally warm and humid. Highs between 18 and 22 C with highest values likely near the south coast and inland southeast.

    TONIGHT ... Rain or drizzle at times in the southeast, foggy or misty by morning, cloudy but some clearing later in the west and north. Mild with lows around 11-13 C.

    SUNDAY ... Morning fog or mist, drizzle ending in southeast before noon, hazy sunshine developing from west to east, becoming warm away from the coasts where some low cloud or fog will be persistent ... highs 19-23 C.

    MONDAY ... Hazy sunshine inland south, increasing cloud elsewhere, outbreaks of light or moderate rain possible especially for Connacht and west Ulster. Warm especially inland south and east with highs 20-24 C. Overnight a period of stronger SW winds and rain could brush parts of the northwest, and this risk extends into Tuesday morning there, due to remnants of "Kirk" although this storm could have disintegrated by the time it passes Donegal Bay as part of a frontal wave. Rainfalls generally slight but could reach 5-10 mms in parts of Ulster.

    TUESDAY ... Morning cloud and a few showers in Ulster, clearing to partly sunny or hazy sunshine, morning lows near 12 C and afternoon highs 19-22.

    OUTLOOK ... Further warm and in some parts sunny weather seems likely once this frontal wave containing remnants of Kirk moves past, with higher pressure building up again. Highs could remain in the lower 20s for some, 18 to 20 C in general. It is still too soon to speculate on the final stages of expected strong hurricane "Leslie" (already a tropical storm) that appears destined to recurve near Bermuda and pass eastern Canada in about two weeks. If it evolves a bit faster, it could become a factor in Irish weather patterns later in the second week of September or around the weekend of 15-16 September and in fact the current 15-16 day GFS model charts show a very strong low near Iceland as the final result with a 30-40 knot westerly gradient for Ulster at that time trending to 20-30 knots in the south. This will be a situation to watch.


    Forecasts for Britain

    TODAY ... Hazy sunshine and warm in many places, low cloud more likely in some west coast districts, highs generally 20-23 C.

    TONIGHT ... Cloudy at times, rain spreading into western regions later, only about 2-5 mms, lows 12-16 C.

    SUNDAY to TUESDAY ... Southern regions should be mainly warm and dry with some hazy sunshine breaking through rather widespread mist and cloud, highs about 22-24 C inland. More cloud, drizzle or light rain at times further north, and the risk of a period of stronger winds and rain arriving on Monday night in western Scotland from "Kirk." (seems appropriate that Kirk would make landfall in Scotland) ... FURTHER OUTLOOK warm and dry in many places later in the week, highs 22-25 C inland, 19-22 C coastal.


    Forecasts for North America

    The heavy rainfalls from remnants of "Isaac" will now move northeast into parts of IL-IN while tapering off in Missouri and Arkansas, Kentucky and Tennessee. The southeast will become warm and dry, with increasing cloud further north ahead of the rain. Continuing warm to hot, and dry further north in the eastern Great Lakes, New England. A few isolated storms will develop in parts of western Canada but otherwise most central and western regions will be warm and dry.

    My local weather on Friday was partly cloudy to sunny at times, with a few towering cumulus visible to west and north (hail reported about 100 kms northeast of here) and the high about 21 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Sunday, 2 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Morning fog or mist and some drizzle ending in southeast soon, then hazy sunshine developing from west to east, becoming warm away from the outer west coast where some low cloud or fog may be more persistent ... highs 19-23 C warmest inland southeast.

    TONIGHT ... Hazy clear skies with mist and fog patches developing. Lows about 11-13 C.

    MONDAY ... Hazy sunshine inland south, increasing cloud elsewhere, outbreaks of light or moderate rain possible especially for Connacht and west Ulster (from weak remnants of "Kirk"). Warm especially inland south and east with highs 20-24 C. Afternoon and early overnight a period of stronger SW winds and rain could brush parts of the northwest, and this risk extends into Tuesday morning there, rainfalls generally slight but could reach 5-10 mms in northern parts of Ulster. Many parts of the south will remain dry.

    TUESDAY ... Morning cloud and a few showers in Ulster, cloudy intervals further south, clearing to partly sunny or hazy sunshine, morning lows near 12 C and afternoon highs 19-22.

    WEDNESDAY ... Hazy sunshine and warm with some coastal low cloud or fog, lows 7-10 C and highs 18-21 C.

    THURSDAY-FRIDAY ... Partly sunny although cloudier north, warm, morning fog or mist. Highs about 20-23 C after morning lows 6-9 C.

    OUTLOOK ... The pattern will stay rather warm although a little more unsettled by next weekend, and into the following week. Any rainfalls should be brief and slight in amounts. Models continue to show a strong extratropical low from "Leslie" crossing the Atlantic around the 12th to 14th with at least a glancing blow for the north and west -- details of course won't be too clear on that for several more days at least.


    Forecasts for Britain

    TODAY ... Partly cloudy and warm, some light showers across the south dissipating as they go further east. Highs generally 20-23 C.

    TONIGHT ... Fog patches, hazy, mild. Lows 9-12 C (13-15 C southeast and London).

    MONDAY and TUESDAY ... Southern regions should be mainly warm and dry with some hazy sunshine breaking through rather widespread mist and cloud, highs about 22-24 C inland. More cloud, drizzle or light rain at times further north, and the risk of a period of stronger winds and rain arriving on Monday night in western Scotland from "Kirk." (seems appropriate that Kirk would make landfall in Scotland) ... FURTHER OUTLOOK warm and dry in many places later in the week, highs 22-25 C inland, 19-22 C coastal.


    Forecasts for North America

    Rain moving into parts of the northeast and Great Lakes region as dry weather retreats into Quebec and New England. Amounts generally 25-50 mms as "Isaac" continues to weaken. A few heavy showers or storms in the Ohio valley, mainly dry and hot in the southeast. Generally dry and warm to hot in central and western regions, outbreaks of heavy showers in central parts of Manitoba-Saskatchewan and eastern Alberta.

    My local weather on Saturday was very pleasant with mostly sunny skies, a few cloudy intervals, and highs near 21 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Monday, 3 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Hazy sunshine inland south and east coast, increasing cloud elsewhere, outbreaks of light or moderate rain possible especially for Connacht and west Ulster (from weak remnants of "Kirk"). Warm especially inland south and east with highs 20-24 C. Afternoon and early overnight a period of stronger SW winds to 30-50 mph, and rain could brush parts of the northwest; this risk extends into early Tuesday morning there, rainfalls generally slight but could reach 5-10 mms in northern parts of Ulster. Many parts of the south will remain dry.

    TONIGHT ... Cloudy with a few clear breaks persisting in the south, any lingering showers likely to be brief and amounts only 1-3 mms at most, some southern locations remaining dry. Lows 10-13 C as winds veer to westerly at about 15-30 mph (30-50 mph north) then drop off later.

    TUESDAY ... Morning cloud and a few showers in Ulster, cloudy intervals further south, clearing to partly sunny or hazy sunshine, highs 19-22.

    WEDNESDAY ... Hazy sunshine and warm with some coastal low cloud or fog, lows 7-10 C and highs 18-21 C.

    THURSDAY-FRIDAY ... Partly sunny although cloudier north, warm, morning fog or mist. Highs about 20-23 C after morning lows 6-9 C. Some drizzle could fall near north and northwest coasts but otherwise it should remain dry.

    OUTLOOK ... The pattern will stay rather warm although a little more unsettled by next weekend, and into the following week. Any rainfalls should be brief and slight in amounts. Models continue to show a strong extratropical low from "Leslie" crossing the Atlantic around the 12th to 14th with some indications on model runs earlier today of an intense storm potential for Ireland 14th-15th ... this has been downgraded on the 00z GFS but the ECM keeps us in suspense with its final day showing Leslie moving east at about 45 deg N, beginning to phase with a larger low near Iceland. In any case these are little more than interesting scenarios at this time range, much could change between now and this time next week when a more reliable forecast might be possible for Leslie.


    Forecasts for Britain

    TODAY ... Partly cloudy and warm, becoming windy later in the day across Scotland and parts of northern England (SW 30-50 mph) with an interval of light rain by this evening. Highs 23-26 C south to 17-20 C north.

    TONIGHT ... Cloudy with some fog patches inland south, rain at times further north where quite windy (WSW 30-50 mph), mild. Lows 11-15 C.

    TUESDAY ... Variable cloud, isolated showers mainly north, a bit cooler in fresh westerly winds 30-50 mph north, 15-30 mph south. Highs 19-22 C south, central incl Wales, and 15-17 C in Scotland.

    OUTLOOK ... Dry and warm for most as high pressure builds up, highs around 21 to 23 C and rather cool at night with extensive fog developing, lows 5-8 C in rural sections and 8-12 C in cities.


    Forecasts for North America

    Remnants of Isaac continue to weaken south of the Great Lakes but a weak front sliding southeast across the Great Lakes will tend to amplify the rain somewhat later today. Another low has formed south of Nova Scotia from another section of Isaac's original circulation (the part that moved up the east coast) and this will now be the main remnant feature. Dry and warm again across most central and western regions, especially across the Rockies and west coast.

    My local weather on Sunday was sunny with a high near 22 C. Warmer temperatures are in the forecast for the rest of this week (25-28 C).


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Tuesday, 4 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Morning cloud and patchy drizzle should clear at least partially to hazy sunshine, although a secondary area of cloud may appear later across the south. It will be fresher than the past two days with highs 17-21 C highest near the east coast.

    TONIGHT ... Clear intervals, fog patches developing, chilly. Lows 5-8 C.

    WEDNESDAY ... Hazy sunshine and warm with some coastal low cloud or fog, and highs 18-21 C.

    THURSDAY-FRIDAY ... Partly sunny although cloudier north, warm, morning fog or mist. Highs about 20-23 C after morning lows 6-9 C. Some drizzle could fall near north and northwest coasts but otherwise it should remain dry.

    WEEKEND OUTLOOK ... The pattern will stay rather warm although a little more unsettled by the weekend, with stronger SW winds developing and an interval of showers or rain late Saturday clearing gradually on Sunday, highs near 21 C Saturday and 18 C Sunday. There may be a few warmer and dry days to follow, before remnants of Leslie arrive in two stages around the following weekend. The models have downgraded the potential for an intense wind storm event but this could re-appear as we still have the better part of two weeks, at the moment, Leslie is expected to brush past southeast Newfoundland in about 8-9 days. The ECM still has a strong extratropical low not that far north of Ireland near the end of its run, the GFS is weaker now, and the GEM signals a storm coming close to Ireland in ten days, so the models continue to "chop and change."


    Forecasts for Britain

    TODAY ... Variable cloud, isolated showers mainly north and east this morning, general clearing to follow, and a bit cooler in fresh westerly winds 30-50 mph north, 15-30 mph south. Highs 19-22 C south, central incl Wales, and 15-17 C in Scotland.

    TONIGHT ... Gradually decreasing westerly winds, clear intervals, chilly especially away from the southeast, lows generally 5-8 C but 8-11 C in London and the southeast.

    OUTLOOK ... Dry and warm for most as high pressure builds up, highs around 21 to 23 C and rather cool at night with extensive fog developing, lows 5-8 C in rural sections and 8-12 C in cities. Showers by Sunday morning.


    Forecasts for North America

    Showers across the southern Great Lakes and parts of the northeast, warm and humid, highs 23-27 C. Variable cloud further south, isolated thunderstorms, hot and humid ... highs 28-31 C. Mainly dry central and western states, adjacent southern Canada, warm.

    My local weather on Monday was mostly sunny with a high near 23 C.


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  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Wednesday, 5 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Hazy sunshine and becoming warm by mid-day and afternoon, with some coastal low cloud or fog possible at times in Connacht and Ulster, with highs 17-21 C. Warmest inland southeast and west Munster.

    TONIGHT ... Clear intervals, fog patches developing, chilly. Lows 5-8 C.

    THURSDAY and FRIDAY ... Partly sunny although cloudier north, warm, morning fog or mist. Highs about 20-23 C after morning lows 6-9 C. Some drizzle could fall near north and northwest coasts but otherwise it should remain dry.

    WEEKEND OUTLOOK ... The pattern will stay rather warm although a little more unsettled by the weekend, with stronger SW winds developing and an interval of showers or rain late Saturday night into Sunday morning, clearing gradually later on Sunday at least in western districts, although showers may persist longer in the east, with highs near 21 C Saturday and 18 C Sunday.

    FURTHER OUTLOOK ... The verdict for next week has changed more to an unsettled pattern with frequent showers and temperatures near normal. The North American models now take "Leslie" well north across Newfoundland before turning the extratropical storm east around Greenland and Iceland. However, these models do allow development of a strong low in the wake of that evolution closer to Ireland, once again around the weekend of 15th-16th but meanwhile the ECM brings "Leslie" across Newfoundland then creates a complex series of frontal troughs in which the energy is fairly continuous through the second half of the week for Ireland. None of these model efforts are too convincing yet, and basically anything could happen (this storm is becoming more powerful but moving very slowly, which creates a large potential for error in position and track, also now we have a weaker system, "Michael" located to the east-north-east in the central Atlantic, interacting with "Leslie" over the 3-5 day period.


    Forecasts for Britain

    TODAY ... Mostly sunny except for an interval of cloud in parts of Wales and west Midlands this morning, remnants of which cloud may spread towards the southeast mid-day. Highs 20-23 C. Scotland may be somewhat cooler in stronger westerly breezes and isolated showers near west coast.

    TONIGHT ... Clear intervals, chilly especially away from the southeast, lows generally 6-9 C but 9-13 C in London and the southeast.

    OUTLOOK ... Dry and warm for most as high pressure builds up, highs around 21 to 23 C and rather cool at night with extensive fog developing, lows 5-8 C in rural sections and 8-12 C in cities. Showers by Sunday morning into later Sunday and then unsettled next week.


    Forecasts for North America

    Widespread heavy showers in eastern Canada and parts of the Great Lakes and northeast states, with a second area developing Midwest and western Great Lakes by evening. Somewhat cooler across western Canada except for west coast, but holding on to very warm and dry conditions across the west and most of the central U.S. as well as border regions of the Canadian prairies. My local weather on Tuesday was sunny and very warm, 24 C at my location, about 18 C closer to the harbour where I noticed quite a strong sea breeze that didn't make it a further 10 kms inland.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Thursday, 6 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Mostly cloudy across parts of the north with a slight risk of drizzle in a few places, otherwise partly cloudy with sunny intervals developing and warming up to about 18-20 C in moderate southwest winds 15-25 mph (some higher gusts south coast).

    TONIGHT ... Clear intervals, fog patches developing south, cloudy north with light rain or drizzle at times. Lows 9-12 C north, 6-9 C south.

    FRIDAY ... Another relatively warm day with partly cloudy skies for most, highs about 19-21 C.

    SATURDAY ... More cloud than sun except for a few locations in the southeast, some light rain at times in coastal northwest. Mild to warm again with morning lows 8-11 C and highs 19-21 C.

    SUNDAY ... Increasing cloud with showers and risk of a thunderstorm developing, lows 7-10 C and highs 16-18 C.

    MONDAY ... Windy and turning considerably cooler with showers including some hail and thunder, wind gusts to 50 mph from WSW veering NW later. Lows near 7 C and highs 14-17 C.

    OUTLOOK ... Unsettled and somewhat milder again in stages, becoming more settled in the south mid-week but eventual outcome of both "Leslie" and "Michael" very much unresolved with a trend in most recent model runs to bring some kind of extratropical low back towards Ireland (there was a tendency for a while for the storm to travel further north). I think that the very slow motion of Leslie has made all of these forecast scenarios very speculative and we won't really know much about the actual outcome until beyond this weekend, after Leslie passes Bermuda, possibly as a cat-3 storm.

    Forecasts for Britain

    TODAY ... Cloudy with some sunny intervals, isolated brief showers mainly in west and north, somewhat heavier at times in western Scotland. Highs around 20-23 C (15-18 C in Scotland).

    TONIGHT ... Hazy clear skies at first then fog developing, lows 7-10 C.

    FRIDAY ... Partly cloudy, warm. Highs 22-25 C.

    OUTLOOK ... Similar on Saturday then unsettled, becoming quite windy and turning colder.


    Forecasts for North America

    Little change as east remains unsettled in various regions, Leslie well offshore creating heavy swells along east coast. Warm and dry in western regions, but only as far north as about the US-Canada border, showery across most of inland western Canada although staying warm and dry on the coast. My local weather on Wednesday was once again sunny and rather warm with highs about 23 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Friday, 7 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... Mostly cloudy across parts of the north and west with a slight risk of showers, otherwise partly cloudy with sunny intervals developing and warming up to about 19-22 C in moderate southwest winds 15-25 mph (some higher gusts developing near west and north coasts).

    TONIGHT ... Clear intervals, fog patches developing south, cloudy north with light rain or drizzle at times. Lows around 10-12 C north, 6-9 C south.

    SATURDAY ... More cloud than sun except for a few locations in the southeast, some light rain at times in coastal northwest. Mild to warm again with morning lows 8-11 C and highs 19-21 C. Rainfalls only 2-5 mms at most and south/east likely to remain largely dry.

    SUNDAY ... Increasing cloud with showers and risk of a thunderstorm developing, lows 7-10 C and highs 16-18 C. Rainfalls 10-20 mms likely.

    MONDAY ... Windy and turning considerably cooler with showers including some hail and thunder, wind gusts to 45 mph from WSW veering NW later. Lows near 7 C and highs 14-17 C.

    OUTLOOK ... Unsettled and somewhat milder again in stages, becoming more settled in the south mid-week but eventual outcome of both "Leslie" and "Michael" continues unresolved -- the early models are somewhat similar to their first approximations several days ago, of a strong low crossing the Atlantic, although now somewhat further north on the weekend of 15-16 September. The ECM model is now weakening both hurricanes around Newfoundland very rapidly but other disturbances form ahead of them in a gradually increasing westerly flow.


    Forecasts for Britain

    TODAY ... Partly cloudy with sunny intervals, isolated brief showers mainly in west and north-central (Cumbria in particular), highs around 21-24 C (16-19 C in Scotland).

    TONIGHT ... Partly cloudy with fog patches, lows 7-10 C.

    SATURDAY ... Partly cloudy, showers developing north and west by evening, warm. Highs 23-27 C.

    OUTLOOK ... Becoming rather windy in the south on Sunday and Monday and very windy in parts of Scotland, considerably colder especially north and central, highs 13-16 C north and 16-19 C south.


    Forecasts for North America

    Hot and humid in southern states but turning cooler in central plains, Midwest with severe thunderstorms developing along a cold front. Cool and dry northern plains and parts of Canadian prairies, continuing very warm and dry in far west. Also rather hot in eastern states trending to near normal in Great Lakes region.

    My local weather on Thursday was sunny and hot although with low humidity so the evening has cooled off reasonably quickly. The high was about 27 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Saturday, 8 September, 2012
    _________________________________


    Forecasts for Ireland

    TODAY ... A mostly cloudy start, then some brighter intervals, sunshine most likely near south coast and possibly east coast, meanwhile some light rain at times in coastal northwest. Rather warm again with higher humidity than recently, highs 19-22 C. Rainfalls only 2-5 mms at most and south/east likely to remain largely dry.

    TONIGHT ... Rain setting in around the west coast, cloudy and misty elsewhere, mild. Lows 10-13 C.

    SUNDAY ... Cloudy with showers and risk of a thunderstorm developing, a few brighter intervals mainly in the southern counties and highs 16-18 C. Rainfalls 10-20 mms likely, some heavier amounts possible.

    MONDAY ... Windy and turning considerably cooler with showers including some hail and thunder, wind gusts to 45 mph from WSW veering NW later. Lows near 7 C and highs 14-17 C.

    TUESDAY ... Continued rather cool and windy at times, periods of rain likely across the north, showers further south (could be largely dry in some south coast locations). Lows near 7 C and highs 13-16 C.

    OUTLOOK ... Unsettled and somewhat milder again in stages, becoming more settled in the south mid-week but eventual outcome of both "Leslie" and "Michael" continues somewhat unresolved -- the consensus now looks like a combined extratropical low (as Leslie absorbs Michael) that becomes quite deep well to the north on the weekend of 15-16 September, but with the possibility of a more active secondary low for Ireland around 17-18th, or (as per the ECM model this morning) with the risk of strong winds back into the forecast at least in northern counties on the night of the 14th to 15th, from rapidly deepening low pressure well in advance of the tropical remnants -- these would follow as another disturbance around Monday-Tuesday 17th-18th. In the very long term, another spell of fine weather is indicated after that, to be followed by yet another tropical remnant later in the month. The main trend ahead, however, is cooling relative to the past week of warm weather.


    Forecasts for Britain

    TODAY ... Partly cloudy, warm and humid, showers developing north and west by evening, warm. Highs 23-27 C.

    TONIGHT ... Cloudy, some isolated showers developing. Mild, lows 13-17 C.

    SUNDAY ... Cloudy, showers and thunderstorms, highs near 20 C.

    OUTLOOK ... Becoming rather windy in the south later Sunday and Monday and very windy in parts of Scotland, considerably colder especially north and central, highs 13-16 C north and 16-19 C south. The rest of the week closer to normal temperatures and somewhat unsettled south to very unsettled further north.


    Forecasts for North America

    Severe storms that developed earlier will continue overnight into Saturday across parts of the east and southeast, some will bring damaging wind gusts and large hail (most likely MS-AL-TN-NC-VA) and further north, heavy rains in parts of the inland northeast and eastern Great Lakes. This front is quite sharp and much cooler weather sets in rapidly once it passes (Tulsa OK dropped from 40 to 20 C earlier Friday). Highs in the low 20s are common in the central plains trending to 18-20 C further north, but it remains hot and dry to the west across the Rockies and west coast. This hot spell will come to a crashing end on Sunday into Monday with widespread showers and thunderstorms, but that front is still developing mainly offshore today.

    My local weather on Friday was sunny and hot again, with low humidity and a high of about 31 C. Clear skies tonight and I hope to witness a rare "occultation" of Jupiter by the Moon that is timed for about 0300-0400h local time. It should be pleasantly warm despite the late hour.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Sunday, 9 September, 2012
    _________________________________


    Forecasts for Ireland

    "Leslie" has finally begun to move north and should be past Bermuda by tonight, then moving across southeast Newfoundland on Tuesday. The models are now finally converging on a solution not that different from their first approximation as discussed here a week ago, namely, a strong windstorm across northern regions late in the week. However, the timing now looks more like Thursday 13th. And the current expectation is that very strong winds will head more for northern Scotland although it seems likely to be quite gusty in exposed parts of Donegal, Mayo and other parts of the northwest.

    TODAY ... Cloudy with a few brighter intervals, outbreaks of light to moderate rain, slight risk of thunder. Moderate southerly winds 20-30 mph at times with higher gusts towards evening in the southwest. Highs 16-18 C. Rainfalls generally 6-12 mm, potential for 20 mms in a few spots.

    TONIGHT ... Showers ending, some clearing but clouding over again later, lows about 10 C in a moderate southwest wind.

    MONDAY ... Variable cloud and frequent showers likely, some with hail and thunder, rather breezy but quite gusty at times in the far north (W 25-45 mph there, otherwise 15-30 mph). Highs 15-17 C. Rainfalls generally 5-10 mm.

    TUESDAY ... Continuing windy and rather cool with frequent showers, winds WNW 20-40 mph, some higher gusts, lows near 8 C and highs near 15 C. Rainfalls generally 5-10 mm.

    WEDNESDAY ... Breezy to windy, showers, possibly becoming very windy by evening and overnight. Lows near 8 C and highs near 18 C.

    THURSDAY ... Windy, some severe gusts possible in north, showers rather squally at times. Lows near 9 C and highs near 16 C.

    FRIDAY ... Breezy, partly cloudy, isolated showers. (could continue to be windy depending on actual timing of post-tropical Leslie/Michael remnants). Lows about 7 C and highs about 15 C.

    OUTLOOK ... If this timing proves correct, the further outlook is likely to be more settled by the weekend. There is still some chance of a slower evolution of the unsettled and windy period, so confidence is not yet very high, but the weekend could turn out fairly pleasant in this scenario.


    Forecasts for Britain

    TODAY ... Increasing cloud, some showers developing, more steady rainfall in parts of Wales and Scotland. Highs 19-22 C.

    TONIGHT ... Showers, becoming windy, SW 30-50 mph at times, lows 8-10 C.

    MONDAY-TUESDAY ... Windy, unsettled, chilly especially Scotland. Highs only 14-17 C south and 10-13 C north.

    OUTLOOK ... Very windy across Scotland and possibly parts of England and Wales by mid-week, as remnants of Leslie and Michael arrive. Gusts to 70 or 80 mph possible in exposed parts of north and west Scotland, otherwise, gusts to about 45-55 mph in exposed locations further south. Frequent showers.


    Forecasts for North America

    TODAY ... The very active front that hit New York and Washington earlier Saturday is now well offshore except in eastern Canada where it will stall and become wrapped up with oncoming Leslie (and Michael, which will probably weaken fast and slide into the whole mess somewhere near St John's Newfoundland on Tuesday). Otherwise, many parts of western-central North America hot and dry now, ahead of a series of weak fronts moving inland across British Columbia early today. Temperatures will be held down to 17-20 in B.C. with widespread showers that will feed some heavy storms late today in Alberta. Further east, highs of 30-35 C widespread in the Canadian prairies and northern-central plains, Rockies, trending to 40-43 C in parts of the southwest.

    My local weather on Saturday was sunny (despite increasing high cloud) and continued hot with a high of 30 C. Feels fresher out now, the high cloud has become a weak front further east now and a stronger push of cool, marine air is just to the west now. Saw the lunar occultation of Jupiter event, the planet skimmed past the Moon's north pole around 0400h Saturday and at my latitude just failed to move behind the Moon as would have been seen further south in this time zone. Venus is still very bright and the Moon will move past around Wednesday morning here.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Moinday, 10 September, 2012
    _________________________________


    Forecasts for Ireland

    "Leslie" still on track to cross southeast Newfoundland on Tuesday. The guidance continues to suggest a glancing blow for northern parts of Ireland late Thursday, as the very strong winds will head more for northern Scotland early Friday. Would expect maximum wind gusts in Donegal around 55-60 mph from the current maps, Thursday evening or early Friday morning. Further south, would expect maximum gusts 40-50 mph. However this situation needs to be watched closely and there is still a slight risk of damaging wind gusts by Thursday.

    TODAY ... Variable cloud and showers likely to become heavy by mid-day west, afternoon east, and some with hail and thunder, rather breezy but quite gusty at times in the far north (W 25-45 mph there, otherwise 15-30 mph). Highs 15-17 C. Rainfalls generally 7-15 mm.

    TONIGHT ... Showers ending, breezy, cool. Winds westerly 20-40 mph at times, lows about 8 C.

    TUESDAY ... Continuing windy and rather cool with frequent showers, winds WNW 20-40 mph, some higher gusts, and highs near 15 C. Rainfalls generally 5-10 mm. There could be some stronger gusts to about 50 mph in the northwest during the afternoon.

    WEDNESDAY ... Breezy to windy, showers or periods of rain, possibly becoming very windy (SW 35-55 mph) by evening and overnight. Lows near 8 C and highs near 18 C.

    THURSDAY ... Windy, turning quite warm across the south in brisk southwest winds, some sunshine inland and east coast, then later some severe gusts possible in north, showers developing late afternoon or evening and becoming rather squally at times. Lows near 9 C and highs near 16 C for northern counties but 19-21 C possible south.

    FRIDAY ... Breezy, partly cloudy, isolated showers. (could continue to be windy depending on actual timing of post-tropical Leslie/Michael remnants). Lows about 7 C and highs about 15 C. Winds abating to moderate westerly by afternoon.

    OUTLOOK ... The weekend looks more settled with some sunshine both days and highs around 18 C. Nights may be quite cool. The following week looks warm at first in a south to southeast backing flow, followed by the possibility of rain and wind from some form of tropical remnant low.


    Forecasts for Britain

    TODAY ... Windy, showers mostly western counties of England and Wales, highs near 17 C.

    TONIGHT ... Showers, strong westerly winds especially Scotland, lows 7-10C.

    TUESDAY ... Variable cloud, showers, risk of hail or thunder, chilly, strong westerly winds in Scotland and northern England (30-50 mph) trending to moderate further south (20-40 mph). Highs only 11-14 C north, 14-17 C south.

    OUTLOOK ... Very windy across Scotland and possibly parts of England and Wales by mid-week, as remnants of Leslie arrive. Gusts to 70 or 80 mph possible in exposed parts of north and west Scotland on Friday morning, otherwise, gusts to about 45-55 mph in exposed locations further south. Frequent showers. Highs generally 13-15 C north and 17-21 C south although it could turn warmer on Thursday especially in the Midlands and south central England inland. (25 C possible).


    Forecasts for North America

    Hot, dry weather is now on the move east and will be centered today from about Manitoba south towards Texas with intensifying cold fronts moving east from the Rockies. Isolated severe storms are likely in regions from about Saskatchewan south to Colorado and Utah. Behind this front, western regions are turning much colder in gusty west winds with some showers or periods of rain and temperatures falling into the 12-15 C range. Despite this, severe forest fires have erupted in strong winds in south central B.C. and it is not clear whether sporadic showers will be enough to reduce this fire risk or if the winds will make things worse (the town of Peachland, B.C., is largely evacuated tonight). Meanwhile, eastern Canada is very wet as a front stalls to await the arrival of Leslie late tonight (Tuesday morning) in eastern Newfoundland. Some wind gusts to 70 mph are expected in the Avalon peninsula.

    My local weather on Sunday was cloudy and much cooler than previous days at about 17 C. Light rain has begun to fall this evening. (still very dry ground here too, although no danger of fires locally).


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  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Tuesday, 11 September, 2012
    _________________________________


    Forecasts for Ireland

    "Leslie" is now approaching the south central coast of Newfoundland and will be close to the south tip of Greenland by tonight. The guidance continues to suggest a glancing blow for northern parts of Ireland late Thursday, as the very strong winds will head more for northern Scotland early Friday. I continue to expect maximum wind gusts in Donegal around 55-60 mph from the current maps, Thursday evening or early Friday morning. Further south, would expect maximum gusts 40-50 mph. However, still on alert as this situation needs to be watched closely and there is still a slight risk of damaging wind gusts by Thursday.

    TODAY ... Continuing windy and rather cool with frequent showers, a few with hail and thunder, and winds WNW 20-40 mph, some higher gusts near west coast to 50 mph, and highs near 15 C. Rainfalls generally 5-10 mm.

    TONIGHT ... Mostly cloudy, breezy and cool, a few showers and lows 6-8 C.

    WEDNESDAY ... Breezy to windy (SW veering WNW 20-40 mph), showers or periods of rain, possibly becoming very windy (W 35-55 mph) by evening and overnight. Highs near 18 C. Rainfalls 10-15 mms.

    THURSDAY ... Windy, turning quite warm across the south in brisk southwest winds, some sunshine inland and east coast, then later some severe gusts possible in north, showers developing late afternoon or evening and becoming rather squally at times. Lows near 9 C and highs near 16 C for northern counties but 19-21 C possible south. Strongest winds likely around 6-9 p.m.

    FRIDAY ... Breezy, partly cloudy, isolated showers. Lows about 7 C and highs about 15 C. Winds abating to moderate westerly by afternoon.

    OUTLOOK ... The weekend looks more settled with some sunshine both days and highs around 18 C. Nights may be quite cool. The following week looks warm at first in a south to southeast backing flow, followed by the possibility of showers from some remnant of the energy from "Michael" which now appears as though it may meander well clear of "Leslie" and feed into a trough picking up a low near the Azores, while the next tropical system, likely to be named soon "Nadine" moves northwest more towards Newfoundland.


    Forecasts for Britain

    TODAY ... Variable cloud, showers, risk of hail or thunder, chilly, strong westerly winds in Scotland and northern England (30-50 mph) trending to moderate further south (20-40 mph). Highs only 11-14 C north, 14-17 C south. Some isolated severe storms possible.

    TONIGHT ... Cloudy, showers or periods of rain developing, cool. Lows 7-10 C.

    OUTLOOK ... Very windy across Scotland and possibly parts of England and Wales by Thursday night, as remnants of Leslie arrive. Gusts to 70 or 80 mph possible in exposed parts of north and west Scotland on Friday morning, otherwise, gusts to about 45-55 mph in exposed locations further south. Frequent showers. Highs generally 13-15 C north and 17-21 C south although it could turn warmer on Thursday especially in the Midlands and south central England inland. (25 C possible). A warm spell likely from weekend to mid-week then showery.


    Forecasts for North America

    Warm and dry across much of the central and eastern U.S. and adjacent southern Canada, as a cold front begins to lose steam across the northern plains states and stalls out in the southwest. Pacific northwest states and western Canada windy and cool with showers mostly over higher terrain. Apart from a few isolated storms along this front, much of the "lower 48" states will remain dry. Windy and wet in far eastern Canada especially Newfoundland as "Leslie" moves through, 50-150 mms rain likely.

    My local weather on Monday was partly cloudy becoming sunny, with showers mainly over surrounding peaks. It was quite cool compared to last week with highs only 15-17 C and a moderate to strong west wind.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Wednesday, 12 September, 2012
    ___________________________________


    Forecasts for Ireland

    Previous outlook on "Leslie" unchanged. Storm moved rapidly through Newfoundland around mid-day and is now southeast of Greenland heading for south coast of Iceland. It appears more certain now that northern Scotland will see the greatest impact from its winds, while Donegal and other parts of the north will get a more glancing blow on Thursday night.


    TODAY ... Some rain across Ulster this morning spreading south but parts of the west may remain dry although cloudy, then becoming partly cloudy with isolated showers, rather gusty winds at times veering to NW 20-40 mph, and highs 12-15 C north, 15-18 C south. Rainfalls generally 2-5 mms, possibly heavier in east Ulster and north Leinster (10 mms).

    TONIGHT ... Clear intervals, chilly to start but clouding over around midnight to early morning, and turning milder. Early lows 6-9 C then about 10-13 C.

    THURSDAY ... Cloudy periods, drizzle, partial clearing and warm, humid especially across southern and central counties, winds increasing gradually to reach SW 30-50 mph by late afternoon (40-60 mph north). Highs will reach about 21 C in parts of southeast, 17-19 C most other places, 15-17 C north.

    THURSDAY NIGHT ... Remnants of Leslie will brush past the north coast and could produce a few gusts to 65 mph from a westerly direction, with a band of moderate rain making some slight advance south but tending to fragment before reaching most of central Ireland. Winds will peak about 35-49 mph in gusts further south. Overnight lows 12-14 C.

    FRIDAY ... Variable cloud, one or two showers, breezy to windy, WNW 20-40 mph (higher gusts north), highs 15-17 C.

    SATURDAY ... Sunny intervals, warmer again, morning lows 6-9 C and afternoon highs 19-22 C.

    SUNDAY ... Showers, chance of a thunderstorm, breezy, highs near 17 C.

    OUTLOOK ... Another settled interval should develop during the week, outcome of new tropical storm Nadine quite uncertain but not likely to affect Ireland before late next week, if at all.


    Forecasts for Britain

    TODAY ... Showers, some heavy in west and north-central portions, chilly in Scotland (highs only 12-15 C), otherwise cool (highs 15-17 C).

    TONIGHT ... Showers ending, some clearing, chilly. Lows near 7 C on average.

    THURSDAY ... Partly cloudy, increasing southwest winds, becoming quite stormy late afternoon or evening in Scotland where gusts could reach 75 mph or higher around midnight. Warm in south by afternoon. Highs 19-22 C south to 14-17 C north.

    FRIDAY ... Breezy to windy (strong gusts Scotland during the morning), showers but also some clear intervals, winds W 30-50 mph. Highs 17-20 C.

    OUTLOOK ... See Ireland forecast, similar if slightly slower evolution.


    North American forecasts

    Dry and warm weather continuing in central and some eastern regions, highs around 27-30 C. Windy and cool in western Canada and adjacent northern plains states, highs 14-17 C. Some showers along weak front through western Great Lakes and Midwest.

    My local weather on Tuesday was partly cloudy with plenty of sunshine by afternoon, but rather chilly in moderate westerly winds, highs 14-16 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Thursday, 13 September, 2012
    ___________________________________


    Forecasts for Ireland

    ALERT for risk of wind gusts in excess of 50 mph across northern regions, mainly this evening and overnight. The energy from "Michael" has blended into the cloud mass associated with former TS "Leslie" and the combined energy just might be enough to get wind speeds into the 35-55 mph range in some parts of Ulster and Connacht. We are watching closely to monitor the very small risk of more damaging gusts that seem more likely headed for Scotland (where damage probably won't occur in the regions impacted, everything there is built for stronger winds than they will see from this event).


    TODAY ... Cloudy periods, some local drizzle west and north coasts mainly, partial clearing developing south-central especially inland to east coast, and becoming warm, humid especially across southern and central counties, winds increasing gradually to reach SW 30-50 mph by late afternoon (40-60 mph north). Highs will reach about 21 C in parts of southeast amd possibly 23 C south of Dublin where the downsloping factor may boost readings, 17-19 C most other places, but only 15-17 C north.

    THURSDAY NIGHT ... Remnants of Leslie will brush past the north coast and could produce a few gusts to 65 mph from a westerly direction, with a band of moderate rain making some slight advance south but tending to fragment to scattered showers before reaching most of central Ireland. Some southern locations will remain dry, otherwise, 3-7 mms rain on average. Winds will peak about 35-49 mph in gusts further south. Overnight lows 12-14 C.

    FRIDAY ... Variable cloud, one or two showers, breezy to windy, WNW 20-40 mph (higher gusts north), highs 15-17 C. Some longer sunny intervals seem likely to develop in the south and perhaps also in the east.

    SATURDAY ... Sunny intervals, warmer again, morning lows 6-9 C and afternoon highs 19-22 C. Cloud, drizzle and sea fog may impact some northern and northwestern coastal districts.

    SUNDAY ... Partly cloudy to overcast, with showers, chance of a thunderstorm, breezy, lows 10-12 C and highs near 17 C. Winds WSW 30-50 mph.

    MONDAY-TUESDAY ... Cool and breezy in a west to northwest flow of 20-35 mph, showers at times, highs only 14-17 C.

    OUTLOOK ... Another settled interval should develop later during the week but there could be some near frosts or even ground frosts before a milder period, meanwhile, the outcome of new tropical storm Nadine is still quite uncertain but not likely to affect Ireland before late next week, if at all. Models do show a fairly wet period resulting but it's too far out to be very confident that this solution is even approximately correct given the variables in play.


    Forecasts for Britain

    TODAY ... Partly cloudy, increasing southwest winds, becoming quite stormy late afternoon or evening in Scotland where gusts could reach 75 mph or higher around midnight. Warm in south by afternoon. Highs 19-22 C south to 14-17 C north. Strong winds will only arrive in south well after sunset.

    TONIGHT ... Windy with showers or periods of rain heavier in Scotland, northern England where 10-20 mms possible, lows 8-12 C.

    FRIDAY ... Breezy to windy (strong gusts Scotland during the morning), showers but also some clear intervals, winds W 30-50 mph. Highs 17-20 C.

    OUTLOOK ... See Ireland forecast, similar if slightly slower evolution.


    North American forecasts

    Dry and warm weather now moving into the east ahead of a slowly developing frontal trough that will bring more organized rainfalls to parts of Great Lakes, Midwest and central plains. Heavier rains at times spreading north from Gulf, but east coast largely dry and sunny. West coast now warming under high pressure, with cool windy conditions inland west and Canadian prairies.

    My local weather on Wednesday was sunny and while quite chilly to start, the afternoon was relatively warm at 22 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Friday, 14 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Continued windy until mid-afternoon then calming down gradually with WNW winds generally 25-45 mph and some higher gusts possible, isolated showers although not much accumulation (1-3 mm) and some sunny intervals becoming longer by late afternoon especially in southern counties. Highs about 14 C north to 17 C south.

    TONIGHT ... Clear intervals, breeze dying down further especially inland south where some fog patches could develop. Chilly with lows 7-10 C north and possibly 4-7 C inland south, 6-8 C coastal.

    SATURDAY ... Sunny intervals for most, pleasant with highs 16-19 C. More cloud likely in far north with some mist or drizzle near Atlantic in some parts of northwest. Breezy again by afternoon (WSW 15-30 mph).

    SUNDAY ... Cloudy with periods of rain developing, 5-10 mms on average, some afternoon sunny breaks or brighter intervals developing, winds veering to west 20-35 mph, morning lows 9-12 C and afternoon highs 15-17 C.

    MONDAY and TUESDAY ... Variable cloud, breezy, rather cool, winds generally westerly at about 15-30 mph, a few showers but rainfalls only about 3-7 mms on average, highs near 15 C.

    WEDNESDAY ... Windy and cool with showers, lows near 7 C and highs near 14 C, winds NW 30-50 mph.

    OUTLOOK ... Becoming dry and cool with slight risk of frosts developing, daily highs in the range of 12 to 16 C. The latest guidance on Nadine once again backs off moving this storm east and in fact most models now show it drifting north or north-north-west in the general direction of Greenland. The ECM still has Nadine tracking east for a time in the Azores but then shoves it back to the west roughly towards its point of origin. Instead of the tropical low, more locally sourced low pressure seems likely to deepen over the North Sea by late next week into the following weekend, with the higher pressure blocking the flow around 20 W, keeping Ireland in a rather cool northwest flow. This cannot be regarded as a final outcome yet but the ECM track for Nadine is a well-known subset of central Atlantic storms and a track from that starting point towards Ireland would be much less likely in statistical terms.


    Forecasts for Britain

    TODAY ... Windy with showers, (W 40-60 mph at times) and cooler, temperatures steady 13-15 C.

    TONIGHT ... Breezy with showers ending, some clearing in south by morning, chilly, lows 7-10 C for most, 5-8 C some inland central locations.

    SATURDAY ... Pleasant sunshine in south, highs near 17 C. Cloudy north, outbreaks of light rain or drizzle, highs near 15 C.

    OUTLOOK ... Similar to Ireland as per the above forecast for Ireland.


    Forecasts for North America

    The pleasant, warm and dry spell continues east of a line from about Montreal to Pittsburgh to Cincinnati, with a front slowly advancing across the Great Lakes and Midwest bringing some heavy showers, and a more organized area of heavy rainfalls in Arkansas moving towards Tennessee and northern Mississippi, Alabama and Georgia. Hot and humid south of that disturbance with isolated storms. Windy and cool in some north central states and much of inland western Canada, trending to warm and dry on the west coast with rain moving into central B.C. from the Pacific but heading east rather than south. Highs on the west coast near 24 C.

    My local weather on Thursday was basically a perfect late summer or early autumn day, after a bracing start (7-10 C) the high was about 24 C. Light winds made that feel rather hot in the direct sun but it stayed cool in the shade. It remains very dry and the risk of wildfires has not reduced much. We are also seeing a lot of bears coming into urban areas looking for fruit as the bush has not produced a very good crop of berries for them. In fact there was a bear captured today not far from where I live which is quite unusual (that sentence could use editing but too late now). :)


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Saturday, 15 September, 2012
    ___________________________________

    Astronomy note: New moon occurs tonight at 03:12 a.m. Sunday (IST).


    Forecasts for Ireland

    TODAY ... Sunny intervals for most, pleasant with highs 16-19 C. More cloud likely in far north with some mist or drizzle near Atlantic in some parts of northwest. Breezy again by afternoon (WSW 15-30 mph).

    TONIGHT ... Cloudy with rain spreading rapidly across the country from west to east, about 5-10 mm likely. Moderate southwest winds and lows 9-12 C.

    SUNDAY ... Cloudy with periods of rain heaviest morning to mid-day in Leinster, then partly cloudy, a further 5-10 mms on average in eastern counties, some afternoon sunny breaks or brighter intervals developing, but isolated showers mainly in Connacht, west Ulster, with winds veering to west 20-35 mph, and afternoon highs 15-17 C.

    MONDAY ... Variable cloud, breezy, rather cool, winds generally westerly at about 20-40 mph, a few showers but rainfalls only about 3-7 mms on average, morning lows 5-8 C and highs near 15 C.

    TUESDAY ... Partly cloudy, showers, cool. Lows 5-8 C and highs near 15 C. Winds WNW 25-45 mph.

    WEDNESDAY ... Breezy and cool with morning showers, afternoon sunny intervals, lows near 7 C and highs near 15 C, winds NW 20-40 mph.

    THURSDAY-FRIDAY ... Partly cloudy and cool, risk of ground frosts inland, daytime highs near 14 C.

    OUTLOOK ... Unsettled, cool. Models are still showing "Nadine" meandering around near the Azores for several days although the GFS now wants to bring a remnant low into the Biscay region before the end of the month.


    Forecasts for Britain

    TODAY ... A few morning showers in east clearing, with pleasant sunshine in south and west including Wales, highs near 17 C. Cloudy north, outbreaks of light rain or drizzle, highs near 15 C.

    TONIGHT ... Increasing cloud, rain arriving west and north. Lows 10-13 C.

    SUNDAY ... Showers and risk of a thunderstorm. Highs near 17 C on average.

    OUTLOOK ... Similar to Ireland as per the above forecast for Ireland.


    Forecasts for North America

    Showers or periods of rain moving through the northeast states with a clearing and cool trend for Great Lakes and Midwest. The weather gradually warms across the central U.S. towards the Rockies and west coast, but a secondary cold front is bringing even cooler weather to the eastern half of the Canadian prairies, with Alberta near normal and B.C. warm in a subtropical high pressure pattern (large diurnal ranges outside the major cities).

    My local weather on Friday continued excellent with sunshine and a high of about 25 C, as high cloud spread in from a distant front well to our north. This should dissipate but we could see some morning low cloud before the warm spell resumes later Saturday. Expecting 28 C on Sunday.


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  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Sunday, 16 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Cloudy with periods of rain heaviest morning to mid-day in Leinster, then becoming partly cloudy, a further 5-10 mms on average in eastern counties, 2-4 mm further west from later showers ... some afternoon sunny breaks or brighter intervals developing, but isolated afternoon showers mainly in Connacht, west Ulster, with winds veering to west 20-35 mph, and afternoon highs 15-17 C.

    TONIGHT ... Mostly cloudy, some clear intervals south after midnight, lows between 6 and 10 C. Moderate SW to W winds in some more exposed locations.

    MONDAY ... Variable cloud, breezy, rather cool, winds generally westerly at about 20-40 mph, a few showers but rainfalls only about 3-7 mms on average, and highs near 15 C.

    TUESDAY ... Partly cloudy, showers, cool. Lows 5-8 C and highs near 15 C. Winds WNW 25-45 mph.

    WEDNESDAY ... Breezy and cool with morning showers, afternoon sunny intervals, lows near 7 C and highs near 15 C, winds NW 20-40 mph.

    THURSDAY-FRIDAY ... Partly cloudy and cool, risk of ground frosts inland, daytime highs near 14 C.

    OUTLOOK ... Unsettled, cool. Models are still showing "Nadine" meandering around near the Azores for several days, and now the GFS shows the storm looping all the way around to near Newfoundland then a weak remnant heads east by the first of October.


    Forecasts for Britain

    TODAY ... Showers and risk of a thunderstorm. Highs near 17 C on average. Rainfalls 10-20 mms and heavier falls likely in western districts.

    TONIGHT ... Showers ending, some clearing, cool. Lows 6-9 C.

    MONDAY to WEDNESDAY ... Showery, breezy, somewhat cooler than normal with highs around 15-18 C. More settled by late in the week with the risk of slight frosts in rural sections.


    Forecasts for North America

    Showers or periods of rain moving out of the northeast states with a clearing and cool trend to follow, continuing partly cloudy and cool for Great Lakes and Midwest with a few scattered showers. The weather gradually warms across the central U.S. towards the Rockies and west coast, but a secondary cold front is now bringing even cooler weather to the northern plains states and it remains rather chilly across the eastern half of the Canadian prairies, with Alberta near normal and B.C. warm in a subtropical high pressure pattern (large diurnal ranges outside the major cities).

    My local weather on Saturday continued sunny with sunshine and a high of about 24 C, expecting 28 C later today, and warm/dry most of this coming week.

    New moon was at 0312h IST.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Monday, 17 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Partly to mostly cloudy with a few light showers, then a band of heavier showers affecting Connacht and west Ulster mid-day, some remnants of these heavier showers may reach other districts later. Rainfalls generally about 2-5 mm but could reach 5-10 mm in the northwest. Rather breezy at times with winds WSW 20-35 mph. Highs 13-16 C north, west and 15-18 C south, east.

    TONIGHT ... Cloudy with a few clear breaks, showers dying out, lows about 7 or 8 C in moderate WNW breezes 15-25 mph.

    TUESDAY ... Breezy and cool, winds NW 20-40 mph, occasional showers or longer periods of rain in some western counties, rainfalls 5-10 mm, and highs about 14-16 C.

    WEDNESDAY ... Variable cloud, some longer bright or sunny intervals developing, showers becoming confined to north then dying out but a secondary band of light rain possible in the northwest late in the day. Morning lows 3-7 C and highs 14-17 C. Isolated ground frost possible.

    THURSDAY ... Cloudy with some sunny intervals, chilly. Morning lows in rural areas only 2-5 C and about 5-8 C elsewhere, highs 13-15 C. Light to moderate northerly winds developing.

    FRIDAY ... Mostly dry but considerable cloudiness, morning ground frosts with lows about 2-5 C and highs 13-15 C.

    OUTLOOK ... Becoming unsettled again, rather cool in a northwest flow, highs about 12-14 C. The current indications are that "Nadine" will circle around once it reaches the eastern Azores later this week, heading away from Europe and back towards the south-central Atlantic, then north into the regions east of Newfoundland. A weak remnant of this storm could be a factor in Irish weather in about two weeks' time. However, there is a very slight chance of a different path that brings Nadine into the Biscay region in about a week. The UK model is currently hinting at this but most of the other global models are on the other plan mentioned.


    Forecasts for Britain

    TODAY ... Partly cloudy south, highs near 18 C. Showers central and north, breezy, cool, highs near 15 C.

    TONIGHT ... Showers at times, lows 7-9 C.

    TUESDAY ... Breezy to windy, cool, frequent showers. Highs 12-15 C north and 15-18 C south. Winds WNW 30-50 mph in exposed locations.

    OUTLOOK ... Similar to Ireland as per the above forecast, although Wednesday could remain showery in the east all day.


    Forecasts for North America

    TODAY ... Heavy showers and thunderstorms are developing from the central and western Great Lakes to the Gulf of Mexico, with warm and dry weather near 30 C on the east coast until some time tomorrow when this front arrives. Chilly in north central states and most of the Canadian prairies, highs only 13-15 C. Warm to hot and dry on the west coast and inland to about the crest of the Rockies, highs 24-27 C.

    My local weather on Sunday was sunny and very warm with a high near 25 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Tuesday, 18 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Breezy and cool with frequent showers in the west, and occasional showers further east. Slight risk of thunder and small hail, winds NW 20-40 mph and highs only 13-15 C north, 15-17 C south. Rainfalls 5-10 mm.

    TONIGHT ... Partly cloudy, showers dying out, chilly. Lows 3-7 C in rural areas with slight risk of ground frost, otherwise 6-10 C.

    WEDNESDAY ... Mostly cloudy, showers tending to move east with partial clearing in south but a secondary area of rain will then move into Connacht and west Ulster later in the day. Winds backing to SW 10-20 mph, a little milder in the south, with highs reaching 16-18 C there, but staying cool in the north (13-15 C). Rainfalls about 2-5 mm south to 5-15 mm north.

    THURSDAY ... Rain ending around mid-morning west, afternoon east, although amounts across the south slight as most of this system will be north of a line from Galway to Dublin. Rainfalls of about 7-15 mm possible there. Morning lows about 5-8 C and afternoon highs 13-16 C for most, 16-18 C south.

    FRIDAY ... Partly cloudy, a chilly start with isolated frost, lows 2-5 C, then afternoon highs only 12-15 C.

    SATURDAY ... Partly cloudy to overcast, showers developing west, morning lows about 3 C and afternoon highs about 15 C.

    SUNDAY ... Showers or periods of rain, highs 13-16 C.

    OUTLOOK ... The general theme will be cool and unsettled. Some models are now returning to the idea of "Nadine" eventually heading northeast into Biscay as a weak extratropical low but presumably with rather heavy rainfalls possibly extending into eastern Ireland, so this will need to be watched, although at the same time other model solutions continue to take remnants of Nadine back to the west before any northward drift resumes. The later European model shows Nadine failing to progress past the Azores but another non-tropical low forming in Biscay that otherwise looks similar to the solutions I mentioned, so either way the rest of the signals favour cool and unsettled weather through the last week of the month with the possibility of heavier rainfalls returning.


    Forecasts for Britain

    TODAY ... Variable cloud, showers heavier in west and north, breezy south to windy north (NW 30-50 mph in Scotland) ... highs around 12-14 C north and 15-18 C south.

    TONIGHT ... Partly cloudy, isolated showers, breezy, cool. Lows 4-7 C on average, some isolated ground frost possible well inland.

    OUTLOOK ... Similar pattern to the above forecast for Ireland with a brief dry spell around Friday-Saturday then cool and unsettled again by next week. If Nadine were to follow the Biscay track some parts of southern England could get a soaking downpour of 20-50 mm.


    Forecasts for North America

    TODAY ... Heavy showers and thunderstorms moving through the Great Lakes and inland northeast, Mid-Atlantic states and inland southeast, and turning considerably cooler than yesterday with highs only 15-20 C (to 23 C south). Some parts of coastal northeast and New England a bit warmer with this front arriving this evening there. Warm to hot and dry in western regions, but remaining cool in a northerly flow in eastern prairies and northern plains states.

    My local weather on Monday was sunny and very warm, or even hot, with a high about 26-28 C (trending warmer inland, 22 C at the seafront).


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Wednesday, 19 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Mostly cloudy, showers tending to move east with partial clearing in south but a secondary area of rain will then move into Connacht and west Ulster later in the day. Winds backing to SW 10-20 mph, a little milder in the south, with highs reaching 16-18 C there, but staying cool in the north, highs about 13-15 C. Rainfalls about 2-5 mm south to 5-15 mm north.

    TONIGHT ... Rain, heavy at times moving across northern and some central counties (mostly north of a Galway-Dublin line), 10-15 mm in places, more showery further south, some places could remain dry although misty. Lows will thus be warmer in the north (7-11 C) and coolest inland south (3-7 C) but also rather mild around the coasts. Rainfalls in the south only trace to about 3 mms.

    THURSDAY ... Rain ending around mid-morning (north)west, afternoon east (including much of Leinster), although amounts across the south especially southwest, slight, as most of this system will continue to be north of a line from Galway to Dublin (possibly more like Athlone to Wicklow by mid-day through afternoon). Rainfalls of about 7-15 mm possible in Ulster, trending to trace amounts in southwest. Afternoon highs 13-16 C for most, 16-18 C south. On Thursday night the rain will be fragmenting to light showers and the southeast will be under what remains with 2-4 mm amounts.

    FRIDAY ... Any remnant rain or drizzle in southeast clearing, otherwise partly cloudy skies developing from north to south, a chilly start with isolated frost in north-central counties, lows 0-5 C, but held up to 5-8 C by cloud in the southeast, followed by afternoon highs only 12-15 C in all areas. Winds rather light but a trend towards northerly breezes then calm at night.

    SATURDAY ... Partly cloudy to overcast, showers may be developing west (see Sunday discussion), morning lows about 3 C and afternoon highs about 15 C.

    SUNDAY ... Showers or periods of rain may develop with highs 13-16 C. This weather system is challenging the various global models so bear in mind that it could turn out rather fragmented and weak, or on the other hand well-organized with moderate or even heavy rainfalls. With "Nadine" likely to become trapped near the Azores or even backing away to the south, the most likely outcome is a separate low, forming not far to the northeast of Nadine, then moving up through Biscay on Saturday night towards the Irish Sea or southern England. This situation will remain rather uncertain until perhaps Friday. The latest European model as well as the GFS have weakened or dropped this system but it is still on the GEM and UK models. If the system fails to materialize the weather may be relatively dry with just weak fronts pushing across from the west rather than moisture from the south.

    The outcome for "Nadine" is also quite different on the various models. The GFS takes it on a long meandering path around Portugal next week and it only dies out totally in about ten days. Other models show it moving back to the southwest and back into the subtropical central Atlantic well to the southwest of the Azores again.

    OUTLOOK ... The following week looks rather cool and unsettled at first, but a less showery trend will develop mid-week with higher pressure edging into the picture, temperatures 1-3 degrees below normal values. This would imply a return of scattered frosts well inland.


    Forecasts for Britain

    TODAY ... Partly cloudy and cool, some southern counties largely dry but Wales and central England showery, then further north a few intervals of light rain. Highs only 12-15 C north, to 16-19 C south.

    TONIGHT ... Partly cloudy, some clear intervals, local frost south central inland, remaining cloudier north with intervals of rain spreading in from Ulster. Lows 2-6 C inland south, 7-10 C elsewhere.

    OUTLOOK ... Similar pattern to the above forecast for Ireland with a brief dry spell around Friday-Saturday then cool and unsettled again by next week. If Nadine or any other low were to follow the Biscay track into south central England on Sunday, some parts of southern England could get a soaking downpour of 20-40 mm. This heavy rain will spread north into Scotland by Sunday night or Monday but it will remain showery in the south in chilly northwest winds.


    Forecasts for North America

    TODAY ... Heavy showers and thunderstorms moving out of the Great Lakes and northeast, Mid-Atlantic states by morning but remaining to some extent stalled over the southeast, while spreading into New England and parts of eastern Canada. A weak high will spread partly cloudy to sunny weather into regions vacated by the rain, but this will last only one day before a secondary low arrives from Minnesota where it will be turning cooler again during the day with a second push of chilly air moving south. This covers most of western Canada east of the Rockies and the northern plains states, but it remains warm to hot and dry in the far west.

    My local weather on Tuesday was once again sunny and very warm, or even hot, with a high about 25-27 C (trending warmer inland, 20 C at the seafront in a rather strong sea breeze). Despite this heat the nights are quite cool, it had already fallen to 15 C at 10:30 pm here.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    UPDATE _ Wed 19 Sep 2012 _ 9:20 p.m.
    ________________________________________

    The European model output is now showing a severe storm potential for Ireland on Sunday or Monday into Tuesday, from the Biscay-origin low pressure system (not "Nadine") discussed earlier in the forecast. The timing is perhaps as uncertain as the intensity so would caution not to focus on either too much at this early stage. The main feature is that strong surface low pressure rapidly phases in with developing upper level low pressure that drops southeast to cause the system to loop around during a deepening process (according to the European model).

    At this early stage, we are not convinced of the severity of this outcome but want to draw attention to the potential as we are now five days away from the event.

    The depicted storm would travel rapidly northeast on Sunday night and Monday across Britain and then swerve northwest towards Ulster, then would loop around back to the south on Tuesday. During its deepening phase, as depicted in the model run, this could be expected to draw in strong gale force winds from the southwest especially in southern coastal sections, and heavy rainfalls throughout Ireland (30-50 mms). From the maps at present I would estimate maximum wind potential of about 80-110 km/hr or 50-65 mph in the south coastal regions trending down to 30-50 mph further north (where the pressure gradient is slacker during the deepening phases). Most of these impacts would be Monday night according to the new timing.

    Other models are not totally inconsistent with this scenario and as the European model leads in general on verification, I would advise a close watch on developments. Nadine, meanwhile, has been generally pushed away to the southwest on most model runs today, after interacting with this Biscay storm in its early stages Friday night.

    Just a rough "ball-park estimate" of the probability of this severe wind and rain event -- about 30 to 40 per cent at this stage, with another 30 to 40 per cent for a modified rain and wind outcome and 10 to 30 per cent for a less stormy or dry outcome.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Thursday, 20 September, 2012
    ___________________________________

    ADVANCE ALERT for possible heavy rain and strong winds by Monday covering large parts of the country. Details are still somewhat sketchy but model consensus is increasing, and a looping track will bring these effects to most regions at various times. This storm is not "Nadine" which now seems more likely to stall over the Azores and then back away to the south or southwest, but the storm expected in Ireland breaks away from Nadine's cloud mass later today or Friday morning, and in any case will become about as strong as Nadine might be on a similar track. Watch for updates as we get closer to this event on Monday. The system has slowed down somewhat from yesterday's early forecast and this will leave more of the weekend dry although first effects of the system will be felt later Sunday. ... Each global model has a slight variation on the theme of this storm system looping around and the UKMO does not bring it as far north which would leave Ireland in northeast winds throughout, whereas the ECM makes a wider loop that would be reflected in stronger winds from a southwest direction at some point. The other models are somewhat intermediate. This situation will be interesting to follow but the chances of a severe storm event are rising to the 50-50 range now, at least for some coastal regions.


    Forecasts for Ireland

    TODAY ... Rain gradually ending across the north-west, and tapering off to drizzle by afternoon in central, east and northeast (including much of Leinster), although amounts across the south especially southwest, slight, as most of this system will continue to be north of a line from Galway to Dublin (possibly more like Athlone to Wicklow by mid-day through afternoon). Rainfalls of about 7-15 mm possible in Ulster, trending to trace amounts in southwest. Afternoon highs 13-16 C for most, 16-18 C south.

    TONIGHT ... Rain will be slowly fragmenting to light showers and drizzle and the southeast will be under the last remnants with 2-4 mm amounts, trace amounts elsewhere, and some clearing late in Ulster, leading to patchy ground frost. Lows 3-7 C north to 7-10 C south.

    FRIDAY ... Any remnant rain or drizzle in southeast clearing, otherwise partly cloudy skies developing from north to south, a chilly start with isolated frost in north-central counties, some sunny breaks mid-day and afternoon with highs only 12-15 C in all areas. Winds rather light but a trend towards northerly breezes then calm at night.

    SATURDAY ... Partly cloudy with some good sunny intervals possible before becoming more overcast, showers possible near west coast by evening ... morning lows about 2-6 C with scattered ground frost, and afternoon highs about 15-17 C.

    SUNDAY ... The morning may be dry for most of the north and west, with drizzle moving into the southeast. Cold to start with frosts in Ulster and Connacht inland, lows -1 to +4 C, but 5-8 C southeast. Increasing cloud with showers or periods of rain by evening, 5-10 mms possible, and highs 13-16 C. Winds generally light at first then increasing to E-NE 20-40 mph.

    MONDAY ... Periods of rain and moderate or even strong winds developing as low pressure loops around from Britain and across western counties by Monday night. Rainfalls 20-40 mms possible, lows near 8 C and highs 12-15 C, with cyclonic winds tending to increase more dramatically at a distance from the low centre where winds could be quite slack. As the track is not that certain, the best idea at present is to alert all districts to some potential for strong winds, but more likely NE winds in the north and SW winds in the south around this low. Some model depictions suggest potential for wind gusts above 50 mph.

    TUESDAY ... Variable cloud, showers or periods of light rain, NE to N winds of about 20-30 mph, chilly with lows near 7 C and highs 10-13 C.

    OUTLOOK ... Slow improvements but rather unsettled and cool for several more days, eventually the possibility of frosts returning.


    Forecasts for Britain

    TODAY ... Cloudy for most, some brighter intervals south, frequent showers central and occasional light showers south. Highs 14-17 C. Turning quite chilly by afternoon or evening in Scotland, temperatures falling to 6-9 C by evening.

    TONIGHT ... Partial clearing north, frosts developing, lows -2 to +3 C inland Scotland and north-central England. Cloudy further south, light rain or drizzle, lows 5-8 C. Misty south, lows 8-10 C.

    FRIDAY ... Showers moving further south, partial clearing across north-central regions, cool. Highs 12-15 C north to 15-17 C south.

    SATURDAY ... Sunny intervals, morning frosts possible, fog patches. Highs about 15-18 C south. Further north, highs 13-16 C.

    SUNDAY-MONDAY ... Stormy at times with heavy rainfalls, strong east winds becoming more northeast then swirling around to west or southwest. Temperatures steady 12-14 C and rainfalls 30-40 mms in many places.

    OUTLOOK ... Cool, unsettled, breezy.


    Forecasts for North America

    TODAY ... Showers, breezy in Great Lakes region, quite cool with winds veering SW to NW-N 20-30 mph, highs only 12-15 C. Some sunshine further east along the Atlantic coast fading to cloud later, 18-20 C. The chilly air mass will be centered in Saskatchewan and Manitoba where highs only about 12 to 15 C, and will extend well south of the border towards the south-central plains but the Gulf coast will remain warm to hot; the front is somewhat inactive across those regions although a sharp windshift can be expected. Sunny and very warm to hot further west, marine cloud beginning to encroach in a few coastal sections.

    My local weather on Wednesday was once again sunny, hazy and very warm with highs about 23-25 C in a slight sea breeze.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    UPDATE _ Thursday 20 September 2012 _ 6 p.m.
    _______________________________________________

    Rainfall amounts overnight are likely to reach 10-20 mm in a zone extending from north Connacht to central Leinster. On either side of that zone, much smaller amounts are likely trending to zero at each extreme (southwest, northeast) with a fairly sharp decline in amounts away from a relatively narrow band that will extend later from about Athlone to Wicklow as it pivots around a developing wave in north central Ireland and generally moves southeast.

    As to the Monday potential storm, models are now in chaos and I am awaiting the new verdict of the European model. The GFS is holding to a fairly strong storm event as described earlier. But it now shows Nadine tagging along through Spain and France into southeast England as the Ireland low loses intensity mid-week. This looks suspiciously near-impossible to verify. The GME model could be said to be holding a weaker but similar solution for the weekend but their output ends at 72h ... The reasonably reliable GEM and UK models have lost much of their earlier intensity for the Monday event and continue to track Nadine away from Europe after the weekend. So this leaves us waiting with heightened anticipation for the "big gun" European model and its latest guidance. Will report back on that around 7:30 p.m.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    UPDATE (2) _ Thursday, 20 September, 2012 _ 7:45 p.m.
    ____________________________________________________

    The ECM more or less "holds serve" on the Monday storm although the loop is now slowed down to the extent that the strongest winds would likely develop late overnight into Tuesday morning. Some very strong NE winds would affect northern England and Scotland on Monday and could reach parts of Ulster briefly but on the depicted track, most of Ireland would see gradually increasing S-SW winds that look strongest around Cork and Kerry while Connacht and perhaps Donegal would see a period of strong NW winds as the low moves west towards them. This is going to be a challenging event to forecast and to explain as a lot of the development will occur somewhat opposite to normal Atlantic low patterns. That is, of course, if the ECM supported by the GFS are correct. The ECM also brings "Nadine" into southern Spain around Tuesday and then northeast across France (as a presumably 30-40 knot tropical depression becoming extratropical) into southern England. This might provide another looping storm involving our forecast by end of the week, but I continue to have doubts about this European destination given the known tendency of the LGEM model to handle such tracks better (and it takes the storm back towards Bermuda).

    This is going to be a very interesting set of forecasts, will be checking other threads for your ideas (post them there as this thread gets a lot of mobile access, thanks.)


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Friday, 21 September, 2012
    ___________________________________

    The GFS and GEM models continue to show a looping storm that reaches the west coast of Ireland and allows wind directions to swirl around in various directions on Monday and Tuesday. The ECM has slightly shifted away from that track to a loop around Britain which keeps Ireland in a strong northeast flow. Other European-based models (UK and GME) show a weaker variation of that scenario. Our forecast will follow the ECM partly because of its reliability and partly because it is near the average in any case. The ECM is slower moving Nadine away from the Azores and hints at a southwest track still, but then loops it around towards Portugal before stalling the remnant near northwest Spain ... none of the model solutions for Nadine have much reliability yet, there is still a chance it might move away from Europe altogether or die out somewhere west of Morocco. )

    ADVANCE ALERT continued for possible heavy rain and strong winds from mid-day Sunday into Monday and Tuesday covering large parts of the country. Details in forecasts, but in general the looping weather system could bring total rainfalls of 30-50 mm and some local wind gusts of 45-55 mph.


    Forecasts for Ireland

    TODAY ... Rain or drizzle becoming rapidly confined to southeast followed by partial clearing, rain ending mid-day in the southeast with a further 5-10 mms there, some sunny breaks mid-day and afternoon with highs only 12-15 C in all areas. Winds rather light but a trend towards northerly breezes then calm at night.

    TONIGHT ... Clear intervals, mist or ground fog developing, frost possible well inland in valleys. Lows generally 2-6 C but locally -1 C in calm conditions.

    SATURDAY ... Partly cloudy with some good sunny intervals possible before becoming more overcast from higher cloud spreading in from south, showers possible near southwest coast by evening ... highs about 15-17 C. Winds generally light and variable in the morning becoming more east to northeast at about 10-15 mph later.

    SUNDAY ... The morning may be dry for most of the north and west, with drizzle moving into the southeast. Cold to start with frosts in Ulster and Connacht inland, lows -1 to +4 C, but 5-8 C southeast. Increasing cloud with showers or periods of rain by evening, 10-20 mms possible by midnight, and highs 13-16 C. Winds generally light at first then increasing to E-NE 20-40 mph.

    MONDAY ... Periods of rain and moderate or even strong winds developing as low pressure loops around from Britain and across western counties by Monday night. Further rainfalls 20-40 mms possible, lows near 8 C and highs 12-15 C, with moderate to strong winds developing from the northeast at 30-50 mph with some potential for higher gusts. There remains some chance of a more cyclonic wind pattern especially in the south. Some parts of east Ulster and north Leinster could have intervals of thundery rain and torrential downpours as the low deepens over northern England.

    MONDAY NIGHT ... Windy and wet, rainfall totals may reach 50 mms in places, and winds from the northeast at 30-50 mph. Lows near 7 C.

    TUESDAY ... Variable cloud although mostly overcast, showers or periods of rain, the strong SW winds of Monday night easing during the day and then replaced later by NE to N winds of about 20-30 mph, chilly with lows near 7 C and highs 10-13 C. Further rainfalls of 10-25 mms.

    WEDNESDAY ... Showery and cool, northerly winds 15-30 mph, lows near 6 C and highs near 13 C.

    OUTLOOK ... Slow improvements but rather unsettled and cool for several more days, even a slight chance of a second significant low that would represent whatever is left of "Nadine" (although still the chance that Nadine will never reach Europe at all, but if it does a more plausible track is into central Europe) ... eventually the possibility of frosts returning as cloud becomes less continual.


    Forecasts for Britain

    TODAY ... Periods of rain moving further south, partial clearing across north-central regions, cool. Rainfalls in south could reach 20-30 mms in a few locations before the system dies out over the Channel by evening. Highs 12-15 C north to 15-17 C south. Moderate northerly winds in some exposed locations but generally rather slack wind gradients with local valley effects.

    TONIGHT ... Clear intervals, chilly, some frosts developing, lows -2 to +4 C in most regions to 7 C around London.

    SATURDAY ... Sunny intervals, morning frosts possible, fog patches. Highs about 15-18 C south. Further north, highs 13-16 C. Rain arriving by late afternoon or evening in the southwest where the day may be mostly cloudy from remnants of the Friday frontal system.

    SUNDAY-MONDAY ... Stormy at times with heavy rainfalls, strong east winds becoming more northeast then swirling around to west or southwest. Temperatures steady 12-14 C and rainfalls 30-40 mms in many places. Details depend on track but strongest winds likely to hit North Sea coasts and eastern Scotland during deepening phase Monday, and possibly Wales on Tuesday from southwest.

    OUTLOOK ... Continuing rather cool, unsettled, breezy. There is a possibility of a second wind and rain storm in the south from remnants of "Nadine" around Thursday or Friday. If not this period will still be unsettled and breezy.


    Forecasts for North America

    Continued rather cool and unsettled in the Great Lakes and chilly across the Midwest and northern plains, central and eastern prairies as modified arctic air continues to stream south. A reinforcing shot of cold air on the weekend will drop maximum temperatures to only 7-12 C in many of these regions. Not quite that chilly further south although below average near 21 C Mid-Atlantic to 24 C southeast states. The trend going further west is hotter until almost the Pacific coast, but the warm spell is being eroded by slow encroachment of marine layers of cooler, moist air with fog patches drifting some distance inland. My local weather featured some of these fog patches mostly off to the south and west allowing hazy sunshine to continue but with thin layers of elevated stratus dimming the sun. This made things a bit cooler than recently with highs near 22 C.

    Further discussion of the Sunday-Monday-Tuesday storm situation can be found in a new dedicated thread on the weather forum.


  • Registered Users, Registered Users 2 Posts: 15,127 ✭✭✭✭kerry4sam


    @ M.T. Cranium: Have you ever thought of creating an app for mobile-use whereby people can choose the area they would like the forecast for and save their settings accordingly ... M.T. Cranium gone mobile? :) Just curious.


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  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    You may or may not be surprised to learn that I am almost entirely clueless (wait this goes on) about mobile phones, apps, twitter and everything that happened on the internet since about 2005. Hence I would have to toss questions like that over to other stake-holders who do know about such matters. This has actually been slowly emerging from back of mind for me since I expanded the forecasts to include Britain, and learned recently that what used to be the IWO forum is now "meteotimes" plus the existence of a facebook group that receives this forecast. So I will open up a thread to ask about potential restructuring and improvements to this free service, noting that I genuinely don't want to inconvenience my loyal readers with overly long or complicated messages.

    Look for that thread to open later today.

    I will have some updated thoughts about the Monday-Tuesday (and now apparently -Wednesday) event later, once the big guy shows up (ECM).

    Once again, direct your comments about the service to this new thread.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    UPDATE _ Friday, 21 September, 2012 _ 8 p.m. IST
    __________________________________________________

    The autumn equinox occurs on Saturday 22nd at 1450h UT or 1550h IST and if you're wondering why it's not today, the autumnal equinox is almost always on the 22nd or 23rd, the reason is related to the somewhat slower movement of the earth around the Sun in summer. The March equinox would appear even earlier except that we have a short month in February for the opposite reason, the earth travels fastest in n.h. winter.

    Mother nature apparently jumped the gun on that seasonal change in some parts of the hemisphere (not here) ... meanwhile, the update on the Monday to Wednesday storm potential is that all models are continuing with their earlier themes and a somewhat slower evolution has crept into the timing, so would expect the heaviest rain Monday night and Tuesday, with mainly northeast winds for Ireland although on some models there would be a period of backing (N to NW) gales in the southwest quadrant of Ireland while the low was both deepening and moving west towards Leinster (or Ulster, the consensus has shifted south on this). Also, Nadine is now abandoned to the Atlantic Ocean and her European visit is off again. That was being advertised for about Friday but by then Nadine could actually be closer to Bermuda than Iberia. It may eventually slog north and come at Ireland as a weak remnant low from the more normal west to east direction. The ECM is still trying to bring it east but I suspect the consensus trend will win out. However, Nadine could be wandering around somewhere not far from the Azores for quite some time.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Saturday, 22 September, 2012
    ___________________________________

    ADVANCE ALERT continued for possible heavy rain and strong winds from mid-day Sunday into Monday and Tuesday covering large parts of the country. Details in forecasts, but in general the looping weather system could bring total rainfalls of 30-50 mm and some local wind gusts of 45-55 mph. This storm will likely reach its peak intensity Monday night into Tuesday morning.

    Brief situational update -- Most models are continuing with earlier themes but there is now growing consensus on a looping storm track that will extend from northern England Monday night towards Dublin or possibly Ulster and then towards the south on Tuesday -- this may mean that strongest winds will be pushed gradually from east to west as the low pressure approaches. Winds would tend to back from northeast to northwest in some western districts, while further south moderate winds would back from northwest to southwest, and then all would come around to the northeast later Tuesday (in some cases after falling off calm). A pattern of strong winds to calm to moderate winds could be expected in eastern and central counties as the low centre approaches, passes through and moves away. There is still some spread in possible outcomes, and the location of heaviest rain will probably run just north of the low's eventual track southwestward. At the moment, that would suggest east to central Ulster, inland Leinster to east Connacht, and central Munster.


    Forecasts for Ireland

    TODAY ... Partly cloudy although overcast near south and west coast this morning, with some good sunny intervals possible especially inland towards Ulster, before becoming more overcast from higher cloud spreading in from south, showers possible at times near outer west coast, little if any accumulation for most places ... highs about 15-17 C but could be held down to 12-14 C under low cloud. Winds generally light and variable in the morning becoming more east to northeast at about 10-15 mph later.

    TONIGHT ... Clear intervals central and inland east, north, low cloud and drizzle elsewhere, some local frost possible but a rising trend after about 02h as calm winds yield to moderate easterlies. Lows 1-4 C for most but 5-8 C in parts of south and near some other coasts.

    SUNDAY ... The morning may be dry for most of the north and inland central to west, with drizzle moving into the southeast and light rain in west coast regions by afternoon. Cold to start with frosts in Ulster and Connacht inland. Under variable cloud, highs about 13-15 C but some places could stay cooler with low cloud cover. Increasing cloud with showers or periods of rain possible by evening mainly in Wexford and nearby southeast, 10-20 mms possible by midnight. Winds generally light at first then increasing to E-NE 20-40 mph.

    SUNDAY NIGHT into MONDAY ... Periods of rain and moderate or even strong winds developing as low pressure loops around from Britain and across western counties by Monday night. Further rainfalls 20-40 mms possible, lows near 8 C and highs 12-15 C, with moderate to strong winds developing from the northeast at 30-50 mph with some potential for higher gusts especially in Ulster by late afternoon. Strong northwest winds will develop in Donegal and Mayo late in the day (35-55 mph) and similar but backing to west in Clare and Kerry. Some parts of east Ulster and north Leinster could have intervals of thundery rain and torrential downpours as the low deepens over northern England.

    MONDAY NIGHT ... Windy and wet, rainfall totals may increase by another 10-20 mms in places, and winds from the northeast at 30-50 mph, easing near the storm track when the low centre approaches east Leinster. Strong winds continuing across the west (NNW 30-50 mph). Lows near 7 C.

    TUESDAY ... Variable cloud although mostly overcast, showers or periods of rain, continued heavy in Leinster during the day, storm totals of 50 mms or more possible ... the strong winds of Monday night easing during the day and then replaced later by NE to N winds of about 20-30 mph, chilly with highs 10-13 C. Further rainfalls of 10-25 mms. Local flooding may develop after prolonged heavy rains.

    WEDNESDAY ... Showery and cool, northerly winds 15-30 mph, lows near 6 C and highs near 13 C.

    OUTLOOK ... Slow improvements to partly cloudy and cool for several more days, even a slight chance of a second significant low that would represent whatever is left of "Nadine" which could arrive from south or west depending on where it goes after tomorrow's approach to Madeira. Some models have it tracking west then north into the central Atlantic and remnants would reach Ireland around Sunday 30th to Tuesday 2nd October; other model forecasts have the remnant low drifting east then north through Biscay and possibly as far as Ireland although in some cases just into western France while it dies out, in the same time frame (30 Sep to 2 Oct).

    Winter forecast posted in winter 2012-13 thread ... preliminary ideas ... generally a mild start with some colder intervals in December and January, trending to much colder in February when snow could become more of an issue. I will post a final seasonal forecast mid-October.

    Forecasts for Britain

    TODAY ... Sunny intervals, fog patches dissipating. Highs about 15-18 C south. Further north, highs 13-16 C. Rain arriving by late afternoon or evening in the southwest where the day may be mostly cloudy from remnants of the Friday frontal system. Some showers in the northwest by late afternoon.

    TONIGHT ... Increasing cloud south, some light rain near Channel, clear intervals and frosty further north, lows there only -2 to +4 C.

    SUNDAY-MONDAY ... Stormy at times with heavy rainfalls, strong east winds becoming more northeast then swirling around to west or southwest. Temperatures steady 12-14 C and rainfalls 30-40 mms in many places. Details depend on track but strongest winds likely to hit North Sea coasts and eastern Scotland during deepening phase Monday, and possibly Wales on Tuesday from southwest.

    OUTLOOK ... Continuing rather cool, unsettled, breezy. Highs 14-17 C.


    Forecasts for North America

    Similar to yesterday as systems have almost stalled out. Cool and showery east, dry and cool east-central, warm/dry further west, some west coast low cloud and fog. My local weather on Friday was cloudy and much cooler as the marine layer moved in (about 50 kms, further inland it was very warm again). Our high was only 16 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Sunday, 23 September, 2012
    ___________________________________

    ALERT continued for possible heavy rain and strong winds from late Sunday into Monday and Tuesday covering large parts of the country. Details in forecasts, but in general the looping weather system could bring total rainfalls of 30-50 mm and some local wind gusts of 45-55 mph. This storm will likely reach its peak intensity Monday night into Tuesday morning.

    Forecasts for Ireland

    TODAY ... The morning may be dry for most of the north and inland central to west, with drizzle moving into the southeast and light rain in west coast regions by afternoon. Cold to start with frosts in Ulster and Connacht inland. Under variable cloud, highs about 13-15 C but some places could stay cooler with low cloud cover. Increasing cloud with showers or periods of rain possible by afternoon into evening mainly in Wexford and nearby parts of south Leinster, 10-20 mms possible by midnight. Winds generally light at first then increasing to E-NE 20-40 mph.

    TONIGHT ... Rain will edge further north but will be largely confined to coastal Wexford, Wicklow with 10-15 mms possible there. Light rain or drizzle could break out elsewhere with slight amounts. Cold and windy, lows near 7 C and winds NE 20-35 mph.

    MONDAY ... Periods of rain and moderate or even strong winds developing as low pressure loops around from Britain and across western counties by Monday night. Rainfalls 20-40 mms possible but amounts before evening generally 5-15 mms, highs 12-15 C, with moderate to strong winds developing from the northeast at 30-50 mph with some potential for higher gusts especially in Ulster by late afternoon. Strong northwest winds will develop in Donegal and Mayo late in the day (35-55 mph) and similar but backing to west in Clare and Kerry. Some parts of east Ulster and north Leinster could have intervals of thundery rain and torrential downpours as the low deepens over northern England during the evening.

    MONDAY NIGHT ... Windy and wet with some thunder in north, rainfall totals may increase by another 10-20 mms in places, and winds from the northeast at 30-50 mph, easing near the storm track when the low centre approaches east Leinster. Strong winds continuing across the west (NNW 30-50 mph) and occasional westerly gusts to about 40 mph south coast. Lows near 7 C.

    TUESDAY ... Variable cloud south although mostly overcast, cloudy elsewhere, further showers or periods of rain, continued heavy in Leinster during the day, storm totals of 50 mms or more possible (additional rainfalls then of about 15-25 mms) ... the strong winds of Monday night easing during the day (Leinster could remain in light winds for much of the day), some regions of south in cyclonic swirling wind pattern, then changing later by NE to N winds of about 20-30 mph, chilly with highs 10-13 C. Local flooding may develop after prolonged heavy rains.

    WEDNESDAY ... Showery and cool, northerly winds 15-30 mph, lows near 6 C and highs near 13 C.

    OUTLOOK ... Slow improvements to partly cloudy and cool for several more days, even a slight chance of a second significant low that would represent whatever is left of "Nadine" -- models are beginning to converge on a weaker solution that either strands the remnants south of the Azores high, or brings a remnant north towards Iceland and northwest Scotland (by 2-3 Oct).

    Winter forecast posted in winter 2012-13 thread ... preliminary ideas ... generally a mild start with some colder intervals in December and January, trending to much colder in February when snow could become more of an issue. I will post a final seasonal forecast mid-October.


    Forecasts for Britain

    TODAY, TONIGHT into MONDAY ... A dry start for most, rain edging north into Cornwall and Devon, then moving faster northward by mid-day, reaching Wales and Midlands by afternoon or early evening. Stormy at times with heavy rainfalls, some thunder embedded, strong east winds becoming more northeast then swirling around to west or southwest. Temperatures steady 12-14 C and rainfalls 30-40 mms in many places. Details depend on track but strongest winds (E-NE 40 to 60 mph) likely to hit North Sea coasts and eastern Scotland during deepening phase Monday, and possibly coastal Wales and southwest on Tuesday from a south to southwest direction.

    OUTLOOK ... Continuing rather cool, unsettled, breezy. Highs 14-17 C.


    Forecasts for North America

    A pleasant fall day across most of the U.S. with scattered showers and cool northwest winds in parts of the Great Lakes region. Temperatures generally a bit below normal in the east, and considerably above normal south-central and western regions. Coastal low cloud breaking up in parts of B.C. and Washington to return those regions to warm sunshine.

    My local weather on Saturday was overcast with highs near 19 C. Hazy but clear intervals overnight and hazy sunshine, 22 C expected here on Sunday.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    UPDATE _ Sunday, 23 Sept 2012 _ 8:00 p.m.
    ___________________________________________

    There is just enough difference in the guidance for the approaching storm that we are forced to give a range of possible outcomes.

    If the GFS model is correct, the storm centre will never reach Ireland and this will allow very strong winds and heavy rainfalls to overspread almost all of eastern Ireland Monday night into Tuesday morning. In this scenario, Dublin, Meath and Kildare could all see 40-60 mms of rain and winds from the northeast approaching 65 mph in gusts (110 km/hr), sustained around 40 mph or 70 km/hr. This scenario would also give heavy rainfalls in east Ulster and other parts of Leinster, trending down to about 15-30 mms west and south. Winds across these other regions would tend to peak about 30 mph gusting to 50 mph and almost the entire storm would be a northeasterly wind event.

    If other models are correct, and there is little variation among them, the storm will take a wider loop that brings the centre across Ulster into west-central Ireland and out to the south by late Tuesday. This track would give a much less significant storm to Dublin and some nearby counties, and would take the heavier rain across Ulster into the north central counties, although this heavier rain would also tend to be somewhat less in total, 30-50 mms in Ulster and 20-40 mms inland central Ireland, trending down to 10-20 mms around all coasts except the north. Wind speeds could be 30-50 mph across Ulster and parts of Connacht trending to 20-40 mph in Munster and Leinster, except for some higher gusts in north Leinster Monday night during the phase where very strong winds are hitting east Ulster.

    My gut feeling is that the outcome will be a blend of these, not quite the GFS track but possibly something like a track running from Louth to Kildare to Waterford. This would place Dublin under the calm eye of the storm at some point around Tuesday morning. It would also imply heaviest rainfalls along and to the north of that track, so Westmeath, Meath, Cavan, Monaghan, Armagh and Down could see the heaviest rainfalls of 35-55 mms. My blend track would be much less windy than the GFS for Dublin and large parts of Leinster although very windy for Belfast and most of Ulster.

    However, this is all speculation within the uncertainties at this time range, forecast followers will have to accept that we are into a "nowcasting" situation to some extent and that all regions especially Leinster and Ulster should be on alert for the potential of very heavy rainfalls and very strong winds depending on the exact outcome. Next update likely around midnight.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Monday, 24 September, 2012
    ___________________________________


    ALERT for heavy rainfalls and strong winds later today, overnight and Tuesday, storm totals of 40-80 mm possible, in parts of Leinster and Ulster, 20-40 mm west Ulster, Connacht, Munster. Winds northeast 30-50 mph in exposed locations (by later afternoon and overnight) with risk of isolated storm force winds 45-65 mph coming inland around Balbriggan across parts of Meath, north Dublin. Also very windy at times in Donegal. Non-severe wind gusts expected in most of Connacht and Munster.

    Situation update: 985 mb low currently east of Bristol heading north with torrential rain over most of Wales. Increasingly, the rain with this system is shifting to the west side of the circulation. Model consensus has shifted to a tighter "loop" track towards the Isle of Man then back to southwest, that keeps the deepening low over the Irish Sea and possibly near the Wexford coast by late Tuesday before it weakens and moves away on Wednesday. The ECM and GEM have the low over central Britain then move it southwest through Wales towards Wexford. Development continues as upper level low pressure moves rapidly southeast to interact with this surface low. A separate trough near the west coast will be pulled into the larger circulation soon. Heavy rain will spread west and a "rainfall max" or convergence zone could develop from about Belfast south towards central Meath and north Kildare. This zone could also be closer to the coast, depending on which model handles this best. West of that feature, banded moderate rainfall is likely in a northerly flow. Although it is still a "nowcast" situation to some extent, it does seem likely to be a relatively severe rain and wind event for parts of Leinster.


    Forecasts for Ireland

    TODAY (MONDAY) ... Periods of rain and moderate or even strong winds developing as low pressure drifts northwest into the Irish Sea. Rainfalls will be generally light until mid-day then may become rather heavy in the east, with 20-40 mms possible by midnight but amounts before evening generally 5-15 mms. Cold and windy with highs 12-15 C, with moderate to strong winds developing from the northeast at 30-50 mph with some potential for higher gusts especially in Ulster and north Leinster by late afternoon. Strong northerly winds will develop in Donegal and Mayo late in the day (35-55 mph) while in Clare and Kerry moderate NW winds of 20-40 mph can be expected, Galway Bay around 30-50 mph NNW. Some parts of east Ulster and north Leinster could have intervals of thundery rain and torrential downpours as the low deepens over northern England during the evening.

    TONIGHT ... Windy and wet with some thunder in north, rainfall totals may increase by another 15-30 mms in places, and winds from the northeast at 30-50 mph, possible increasing at times to 45-65 mph in a zone from around Balbriggan southwest into north Kildare. Strong winds continuing across the west (NNW 30-50 mph) and occasional westerly gusts to about 40 mph south coast. Lows near 7 C.

    TUESDAY ... Variable cloud south although mostly overcast, cloudy elsewhere, further showers or periods of rain, continued heavy in Leinster during the day, storm totals of 40-80 mms possible (additional rainfalls on Tuesday then of about 15-25 mms) ... risk of heaviest rain in a convergence zone situation just west of Dublin. Rather cold with highs 10-13 C. Winds may ease slightly near the southeast coast but many places could have strong winds at times all day from a N to NE direction, 35-55 mph in exposed areas and 20-40 mph generally. Local flooding may develop after prolonged heavy rains. This seems to be most likely Tuesday morning.

    Flood risk seems greatest in Down, Armagh, Louth, Meath, Dublin, Kildare, Westmeath and nearby parts of Monaghan, Cavan, Longford.

    WEDNESDAY ... Showery and cool with some hail or thunder in a few locations, northerly winds 15-30 mph, lows near 6 C and highs near 13 C.

    OUTLOOK ... Slow improvements to partly cloudy and cool for several more days, even a slight chance of a second significant low that would represent whatever is left of "Nadine" -- models are beginning to converge on a weaker solution that either strands the remnants south of the Azores high, or brings a remnant north towards Iceland and northwest Scotland (by 2-3 Oct).


    Forecasts for Britain

    TODAY ... Heavy rain across Wales and nearby parts of western England, where winds rather light due to proximity of low centre, otherwise showers with some brighter intervals in gusty southeast winds 30-50 mph. Also some heavy bands of rain across southern Scotland where winds likely to be strong easterly at times 40-60 mph. The southwest counties of England will see thundery showers at times and strong SW winds 35-55 mph. Temperatures steady 11-13 C in the heavier rain, otherwise 13-16 C, and rainfalls 30-60 mms in many parts of Wales.

    TONIGHT ... Some continuing heavy rains in Wales, showers redeveloping further east and gusty SW winds for most, light winds in Wales, strong SE winds in Scotland. Lows 7-9 C. Further rainfalls of 20-40 mms in Wales could produce severe local flooding in Severn drainage.

    OUTLOOK ... Continuing rather cool, unsettled, breezy. Highs 14-17 C.


    Forecasts for North America

    Little change from yesterday, warm and dry across most of the U.S. except near the Great Lakes with a few showers in a blustery W-NW wind, and also some thunderstorms over Utah and Colorado moving into the central plains states overnight. My local weather on Sunday was partly cloudy and hazy with highs of about 20 C.

    Check the ongoing storm thread for updates on forecast ideas and model depictions of the developing storm. I will try to update from time to time


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    UPDATE _ Monday, 24 September, 2012 _ 6 p.m. IST
    __________________________________________________

    The ALERT is maintained for heavy rainfalls in Leinster and east Ulster with amounts of 30-50 mms already reported in some places, and more than that likely to fall in the next 24 hours (40-80 mms possible in some locations in Dublin and Meath). Severe flood potential exists with these ongoing heavy rainfalls, likely to peak Tuesday morning to mid-day although the rain will continue beyond that well into Tuesday night. There could be some thunder with the heaviest rain late tonight.

    I have posted a longer synopsis on the storm's track in the storm thread, basically, it appears likely that the low centre now in north-central England will drift west tonight past the Isle of Man towards Dublin, turning more to the south as it passes Anglesey. This track, combined with further development (central pressure now at 983 mbs likely to fall to 973 mbs) will produce much stronger N to NE winds across the Leinster coast and in east and north Ulster. Some local gusts to 60 mph could develop late tonight, especially from Balbriggan north to about Antrim. Local topography could channel these winds in areas around Belfast. The strongest winds might therefore be expected to come inland west of Dublin while the capital may see less blustery winds at least until mid-morning Tuesday when the low will have moved a bit further south to allow the strong winds to move down the coast. Eventually the heavier rains and stronger winds will arrive in the southeast later Tuesday. There will be much less rain and more moderate wind speeds in the western half of the country but as the rainfall becomes banded there will be local variations between 10 and 30 mms in total. Some parts of the southwest could remain almost dry.

    Next update likely around 10:30 p.m. ... this will be a "high impact" event for parts of Leinster and east Ulster and the worst of the storm is likely to be late tonight and Tuesday morning. This is also about when I would expect any severe flooding to reach its crest. Let's hope the rivers and streams can handle the expected downpours, but I believe there is a risk of severe river and urban flooding in this scenario.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    UPDATE _ Monday 24 Sep 2012, 11 p.m.
    _____________________________________

    Conditions are generally wet but not really that stormy yet ... but the main impact of this system will probably come between 0400h and 1200h as the low deepens and moves much closer to Ireland. Thus, no change in the general outlook, still expecting heavier rain to develop late tonight with the risk of strong winds especially for Ulster and north Leinster. No sharp cutoff seems likely for rainfall across the west, in fact some parts of Connacht could see equal amounts to inland Leinster as the storm creates spiral bands of moisture. Some very interesting effects are likely in coastal Leinster when the deep low arrives offshore, so we'll reconvene at 0630h or whenever you start your day. Any significant updates before then will go into the storm thread.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Tuesday, 25 September, 2012
    ___________________________________


    ALERT continued for heavy rainfalls and strong winds today and Wednesday, storm totals of 40-80 mm possible, or close to 100 mms (due more to long duration than any increase in hourly rate) in parts of Leinster and Ulster, still expecting about 20-40 mm west Ulster, Connacht, Munster. Winds northeast 30-50 mph in exposed locations today and tomorrow with risk of isolated storm force winds 45-65 mph coming inland around Balbriggan across parts of Meath, north Dublin. Strongest winds will be moving further south on Wednesday. Also very windy at times in Donegal. Non-severe wind gusts expected in most of Connacht and Munster.

    Situation update: 975 mb low near Newcastle, England with western centre gradually developing over northeast Irish Sea replacing this older centre (about 979 mbs at present). This low will drift southwest towards Anglesey then across western Wales and southern England in the next two days, slowly filling, but from rather conflicting guidance, the possibility exists that the low will remain rather deep all day today, tonight and only start to fill tomorrow. Minimum pressures could reach 973 mbs late today. These developments will tend to ramp up wind speeds gradually and although rain may break up to bands of showers, some of those could then become heavier than the light rain overnight. Mainly because of the longer duration of the event, I am maintaining flood risk and high rainfall totals as per earlier forecasts. Wind speeds may not make it to storm force but the potential will be there and it's still somewhat of a nowcast situation for the next 36 hours.


    Forecasts for Ireland

    TODAY ... Mostly overcast, further showers or periods of rain, continued heavy in Leinster during the day, 15-25 mms liikely, bringing storm totals to 40-100 mms ... risk of heaviest rain in Dublin and Meath, spreading south into Wicklow later. Other areas of heavy rain likely at times in east Ulster, isolated parts of northwest counties. Rather cold with highs 10-13 C. Northeast winds increasing to reach 35-55 mph in exposed areas and 20-40 mph generally. Risk of stronger gusts will be closely watched (see updates). Local flooding may develop after prolonged heavy rains. This risk will be spreading south tonight, and there could be local tidal high water on east coast.

    TONIGHT ... Further rains of 10-20 mms possible, Wicklow and Wexford now getting heavier rain but it could continue across most of Leinster and east Ulster. Showers further west in gusty NE to N winds 25-45 mph (backing at times to NW in Kerry, Cork).

    WEDNESDAY ... Showery and cool with some hail or thunder in a few locations, northerly winds 15-30 mph, lows near 6 C and highs near 13 C. Rain could continue in southeast for part of the morning before breaking to showers.

    OUTLOOK ... Partly cloudy, isolated showers Thursday-Saturday with more seasonable highs in the 14 to 17 C range, cooler nights (3-7 C) ... weekend showery to start, improving later.

    Forecasts for Britain

    TODAY ... Heavy rain across north Wales and nearby parts of northern England, strong east winds mainly confined to Scotland but spreading back to northern England later, moderate to strong SW winds across southern England, scattered hail or thunder showers. Highs for most 13 to 16 C.

    TONIGHT ... Rain becoming heavier again in Wales, spreading to southwest and south central England, west Midlands. Rain becoming showery or drizzly further north. Lows 7-9 C. Continuing windy in south and parts of north, Scotland, lighter winds returning to Wales.

    OUTLOOK ... Continuing rather cool, unsettled, breezy. Highs 14-17 C. Winds not as strong in the south by later Wednesday.


    Forecasts for North America

    Showery in parts of the Midwest and Great Lakes, dry and warm southeast, east coast, inland to about Pittsburgh to Louisville, highs generally 24-27 C east but 16-20 C further north. West still largely warm and dry. My local weather on Monday was cloudy with hazy sun at times, highs near 20 deg C.

    Check the storm thread for updates ... the most active part of this storm appears to be slightly delayed but would expect it to be mid-day or afternoon from Dublin north, this evening further south and late overnight southeast.


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  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Wednesday, 26 September, 2012
    ___________________________________


    Update ... The low began to travel much faster around midnight and is already well south of Dublin over Cardigan Bay (Wales) heading towards Monday's position over southern England. It is also rapidly losing intensity although a few more hours of gusty winds can be expected. By late tonight, the blocking pattern will break down and more normal westerly flow will resume. Further rain and wind are gradually becoming sub-alert criteria but the accumulated rainfalls could still produce ongoing flooding in a few locations especially in North Dublin and Meath.

    Forecasts for Ireland

    TODAY ... Blustery with further showers, heavier in the southeast this morning, amounts 10-15 mms in places, NNE winds 30-50 mph. Further west, partly cloudy to overcast with drizzle or light rain at times in northerly winds 20-35 mph. Continuing cool with highs 11-14 C.

    TONIGHT ... Clear intervals followed by increasing cloud, chilly, lows about 4 to 7 C, temperatures rising somewhat towards morning. Moderate NW winds mostly in exposed coastal locations.

    THURSDAY ... Cloudy north, partly cloudy south, breezy to windy at times from the west. Somewhat milder especially for the south, highs 11-15 C.

    FRIDAY ... Early morning showers or periods of rain, gusty southwest to west winds 25-45 mph, then variable cloud, a few more showers mainly in Connacht, morning lows near 9 C and afternoon highs about 15 C.

    SATURDAY ... Partly cloudy, mild for most, cloudy with outbreaks of light rain in the north, lows near 6 C and highs near 17 C.

    SUNDAY ... Variable cloud, showers, mild, southwest winds becoming blustery again later, lows near 8 C and highs 14-16 C.

    FURTHER OUTLOOK ... Unsettled for the first part of the week (1-5 Oct) then a more settled and calm weather pattern with fog at night, hazy sunshine in the daytime. Rather mild days but chilly nights.


    Forecasts for Britain

    TODAY ... Outbreaks of rain across Wales and southern England, drizzle at times in the north, some sunny breaks and showers for eastern England with south to southwest winds 20-40 mph (35-55 mph exposed coasts). About 20 to 30 mms further rain in some places. Highs generally 12-15 C.

    TONIGHT ... Light rain southern England, drizzle elsewhere, fog developing. Lows about 6 C.

    OUTLOOK ... Showery at times although longer dry intervals in south, near normal temperatures from Thursday to Sunday. Windy by Friday in Scotland.


    Forecasts for North America

    Outbreaks of severe storms in a few parts of the Midwest and more widespread showers, gusty southwest winds. Staying dry and warm in some parts of the east-central and southeast U.S. The long warm, dry spell over the west continues with just isolated showers, but fronts are now beginning to break down the dry conditions in central B.C.

    My local weather on Monday was hazy with sunshine during the afternoon, highs of about 20 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Thursday, 27 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Cloudy north and west, partly cloudy southeast, breezy to windy at times from the west. A dry start for most, although a few light showers in west Munster this morning, then some light rain arriving by afternoon in the north-west. Just a few sprinkles of light rain elsewhere, or dry. Highs between 12-16 C, mildest south. Winds freshening again to W 20-35 mph.

    TONIGHT ... Showery rainfalls of 5-10 mms for most regions, somewhat heavier in north, breezy (WSW 20-40 mph), lows near 8 C.

    FRIDAY ... Early morning showers or periods of rain, gusty southwest to west winds 25-45 mph, then variable cloud, a few more showers mainly in Connacht, and afternoon highs about 13-15 C.

    SATURDAY ... Partly cloudy, mild for most, cloudy with outbreaks of light rain in the north, lows near 6 C and highs 14-17 C.

    SUNDAY ... Variable cloud, showers or periods of rain (7-15 mm), mild, southwest winds becoming blustery again later, lows near 8 C and highs about 14-16 C.

    MONDAY ... Windy with showers, winds SW 30-50 mph, lows near 7 C and highs near 15 C.

    FURTHER OUTLOOK ... Unsettled for the first part of the week (1-5 Oct) then eventually a more settled and calm weather pattern with fog at night, hazy sunshine in the daytime. This may only last a day or two before more unsettled and rather chilly weather arrives. The details depend on whether slow-moving Nadine ever escapes from the subtropical easterly flow and finds a way through into the westerlies. Models are still having lots of trouble with Nadine.


    Forecasts for Britain

    TODAY ... Mostly cloudy, a few light showers but amounts generally 1-3 mms, highs 14-16 C.

    TONIGHT ... A few showers, or periods of light rain west, lows 7-10 C.

    OUTLOOK ... Windy with showers on Friday, somewhat improved on Saturday then showery and breezy Sunday-Monday, temperatures generally 15-17 C daytime and 7-10 C overnight.


    Forecasts for North America

    The southeast U.S. remains mostly dry and very warm although some heavy rain is drifting inland from the Gulf of Mexico in places. A front across the Ohio valley will bring some locally heavy rains to PA, OH, IN, IL and KY, but north of that a somewhat cooler high is bringing seasonable dry fall weather to the Great Lakes region. The Midwest front has no real cold push behind it and just falls apart across the central plains under a ridge of higher pressure, west of that it turns very warm and sunny with highs well into the mid-20s to near 30 C in parts of southern Canada west of Manitoba. This warm air extends to the coast (around 21 C on the coast) with a wet system coming inland across central B.C., but my local weather remains dry, in fact we have had less than 10% of normal rainfall since mid-July here and an almost totally dry September, the high on Wednesday was 21 C with hazy sunshine.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Friday, 28 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... This morning, a second band of showers will rapidly move across the country, heavier in the north, but this rain will only amount to about 3 to 5 mms, before partial clearing ... a few more showers are likely later on, giving a few more mms in places ... gusty southwest to west winds 25-45 mph, and afternoon highs about 13-15 C.

    TONIGHT ... Showers ending, winds diminishing to west 15-30 mph, lows around 7 C.

    SATURDAY ... Partly cloudy, mild for most, cloudy with outbreaks of light rain in the north, and highs 14-17 C. Winds becoming SW 15-30 mph.

    SUNDAY ... Variable cloud, showers or periods of rain (7-15 mm), mild, southwest winds becoming blustery again later, lows near 8 C and highs about 14-16 C.

    MONDAY ... Windy with showers, winds SW 30-50 mph, lows near 7 C and highs near 15 C.

    FURTHER OUTLOOK ... Unsettled for most of next week (1-5 Oct) and rather mild most days in a southwest flow. The details continue to depend on whether slow-moving Nadine ever escapes from the subtropical easterly flow and finds a way through into the westerlies. Models are still having lots of trouble with Nadine. The GFS actually shows a fairly windy day a week from today, as a direct result of Nadine's remnant low, but other models have a slower evolution that is probably more realistic.


    Forecasts for Britain

    TODAY ... Windy with occasional showers, winds WSW 30-50 mph north and 20-40 mph south, highs about 15 C.

    TONIGHT ... Showers ending, lows near 7 C. Winds W 20-40 mph.

    SATURDAY ... Partly cloudy south, periods of rain in Scotland, showers in northern England by afternoon. Highs about 17 C south, 13-15 C north.

    OUTLOOK ... Breezy with showers Sunday-Monday, temperatures generally 15-17 C daytime and 7-10 C overnight. Next week generally near normal in temperatures and showery.


    Forecasts for North America

    Only slight changes from yesterday, as rain continues to move gradually further east in the inland northeast, warm and humid near the Atlantic coast and through the southeast although rain moving in from the Gulf especially in east Texas and Louisiana. Highs generally close to 30 C in the warm air mass, 20-23 C in the rain then a cooler and drier air mass holds its place over the Great Lakes and St Lawrence valley, 15-18 C by day. The central and western regions are generally in a broad south to southwest flow of very warm almost summer-like weather that is now pushing well north of the Canadian border almost to the territories, while rain moves across the higher latitudes and early snows are falling in the far northwest and interior Alaska.

    My local weather continues warm and dry, still waiting for the first wet day of the autumn season. An average September here has about two-thirds the rainfall you might expect (50-75 mms) but so far I don't think we have seen a measurable rainfall at my location and only 3 mms at the Vancouver airport (that shower missed here). Quite unusual and the ground continues to be baked with unwatered grass in a dormant yellow state, trees turning colour slowly despite the warmth (high of 22 C on Thursday). No doubt we will be paying for this at some point with a deluge.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Saturday, 29 September, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Partly cloudy, relatively mild, some good sunny intervals although more cloudy with outbreaks of light rain in the north, and highs 14-17 C (mildest in south). Winds becoming SW 15-30 mph.

    TONIGHT ... Periods of rain developing, winds SW 20-40 mph, lows 8-10 C.

    SUNDAY ... Variable cloud, showers or periods of rain ending (7-15 mm), mild, southwest winds becoming blustery again later, and highs about 14-16 C. A few more showers will arrive by afternoon in Connacht.

    MONDAY & TUESDAY ... Windy with showers, winds SW 30-50 mph, lows near 7 C and highs near 15 C. Increasing risk of hail and thunder.

    WEDNESDAY ... Windy and cold with hail or thunder in frequent showers, some brighter intervals, winds veering to WNW 20-35 mph. Lows near 6 C and highs 11-14 C.

    FURTHER OUTLOOK ... Unsettled weather likely to continue but turning milder again, Nadine possibly entering the picture around the weekend of 6-7 October as the slow-moving storm finally finds a way through to the westerlies before dying out as an extratropical low. This could be part of a rather wet period.


    Forecasts for Britain

    TODAY ... Partly cloudy or sunny south, periods of rain by afternoon or evening in Scotland, a few isolated showers in northern England. Highs about 17 C south, 13-15 C north.

    OUTLOOK ... Breezy with showers Sunday-Monday, temperatures generally 15-17 C daytime and 7-10 C overnight. Next week generally near normal in temperatures and showery.


    Forecasts for North America

    The warm, dry spell is being gradually eroded from the west by weak fronts and from the south by increasing moisture from the Gulf of Mexico, but the weekend will continue quite warm and dry in much of the western-central U.S. and south central Canada. A rather weak low is bringing outbreaks of light rain to New England and eastern Great Lakes, as well as offshore then into parts of Virginia and North Carolina. Temperatures in the east have fallen back to more seasonable levels.

    My local weather here on Friday was cloudy and warm (21 C) with a few outbreaks of light rain for a change, not much accumulation.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Sunday, 30 September, 2012
    ___________________________________

    Astronomy note: Full moon occurred at 0420h or as the moon was setting in Ireland.

    Forecasts for Ireland

    TODAY ... Windy and mild (SW 30-50 mph) in advance of a blustery line of showers now running from Ulster to west Munster, that may become thundery in Leinster mid-day, skies partially clearing after it passes although with further showers possible in Connacht especially. Rainfalls yet to come about 5-10 mms but some isolated heavier amounts around Tipp and Laois, highs about 14-16 C. Rain is likely to arrive in the Dublin region about 1100-1200h lasting about 2-3 hours. The southeast will see the latest arrival about 1400h in Wexford (of the main band, there could be lighter showers ahead of that, but a fairly dry morning in many parts of Leinster).

    TONIGHT ... Breezy to windy and mild, showers mainly confined to north and west, lows about 10 C. Winds WSW 25-45 mph.

    MONDAY & TUESDAY ... Windy with showers, some sunny intervals, winds SW 30-50 mph, lows near 7 C and highs near 15 C. Increasing risk of hail and thunder.

    WEDNESDAY ... Windy and cold with hail or thunder in frequent showers, some brighter intervals, winds veering to WNW 20-35 mph. Lows near 6 C and highs 11-14 C.

    FURTHER OUTLOOK ... The European model has a cool, dry spell building in behind the last of the mid-week troughs, and this holds back the Atlantic low that will contain remnants of Nadine until well beyond the weekend. Other models are showing a much briefer settled interval followed by this oncoming mild southwest flow and Nadine's wet remants reaching Ireland around Monday 8th.


    Forecasts for Britain

    TODAY ... Breezy to windy, showers developing, risk of thunder in parts of Wales and central England. Winds SW 20-40 mph increasing to 30-50 mph later, highs 16-18 C south, 14-16 C central and 12-14 C Scotland.

    TONIGHT ... Frequent showers, windy, mild. Lows 9-12 C.

    OUTLOOK ... Similar to the Ireland forecast as systems will be moving east rapidly therefore unsettled with near normal temperatures falling to about 12 to 14 C in the south by mid-week.


    Forecasts for North America

    Breezy and mild to warm across most of western Canada and adjacent northern plains, Rockies in U.S., highs into lower 20s to 27-30 C further south. Weak fronts arriving on west coast increasing cloud with some showers. Another weak front across the northern plains mostly a dry wind-shift from SSW to WNW, some showers closer to northern Ontario. The northeast U.S. is now covered by rather chilly and cloudy weather with outbreaks of light rain developing under weak centres of low pressure. This system is stronger offshore from New England with southerly winds and rain into Nova Scotia and New Brunswick. Meanwhile, wet across the southeast as rain moves slowly northeast from the lower Mississippi valley. Warm and humid with thunderstorms in Florida.

    It looks like a perfect weather day for the final round of the Ryder Cup near Chicago, almost calm and sunny skies, highs near 22 C. Glad to see that it will be an exciting finish after Europe clawed back a couple of points in the late afternoon.

    My local weather on Saturday was cloudy but warm with some sun at times, highs around 21 C.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer published once a month, can be seen at bottom of post 2565 dated 24 July 2012.

    Monday, 1 October, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Windy with showers, also some brief sunny intervals, winds generally SW 25-45 mph with some higher gusts, highs near 15 C. There will be an interval of heavier showers and the risk of hail and thunder arriving in the west this afternoon and spreading east this evening. Rainfalls 5-15 mm with the heavier falls in the west.

    TONIGHT ... Breezy with occasional showers continuing, 3-7 mm additional rain possible, lows 5-8 C.

    TUESDAY ... Frequent showers, becoming heavy or torrential in places later in the day, winds SW 25-45 mph with some higher gusts by late afternoon and evening. Highs 13-16 C. Rainfalls of 10-30 mm possible.

    WEDNESDAY ... Windy and rather cold with hail or thunder in frequent showers, some brighter intervals, winds SW 20-40 mph veering to WNW 20-35 mph by afternoon or evening. Lows near 6 C and highs 12-15 C. Rainfalls about 10 mm.

    THURSDAY ... A few showers but gradually clearing east, in a moderate NW flow, cool. Lows 4-7 C and highs 11-14 C.

    FRIDAY ... Partly cloudy, cool. Risk of morning frosts inland, lows -1 to +3 C and highs 11-14 C.

    WEEKEND OUTLOOK ... Saturday may remain dry as most models currently have the Atlantic low containing Nadine's remnant pushing slowly northeast to arrive Sunday or Monday, so expect a warming trend in general, and becoming unsettled again by Sunday (late) into Monday.


    Forecasts for Britain

    TODAY ... Partly cloudy, showers and a few thunderstorms possible, with hail in some parts of north-central and southern England. Highs 14-17 C.

    TONIGHT ... Frequent showers, windy, rather cold. Lows 6-9 C.

    OUTLOOK ... Similar to the Ireland forecast as systems will be moving east rapidly therefore unsettled with near normal temperatures falling to about 12 to 14 C in the south by mid-week. Some parts of southern England may have heavier rainfalls on Wednesday from a wave that will largely miss Ireland earlier on its way east. The weekend could remain dry longer although
    timing is in any case rather uncertain for Nadine's final stages.


    Forecasts for North America

    Heavy rain developing in the southeast and mid-Atlantic, Ohio valley regions, warm and humid with highs 20-23 C. Rain spreading later to the northeast states and the Great Lakes region (south/east). Remaining pleasantly warm in parts of the western Great Lakes and Midwest, and very warm further west in a south to southwest flow. Most of western Canada remains warmer than average too in a mild Pacific flow.

    My local weather on Sunday was sunny and pleasantly warm at 20 C. The month ended with 5 mm of rain which is 10% of normal here. Ground remains very dry now into early October but some rain is expected here late today.


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  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer which can be seen at bottom of post 2565 dated 24 July 2012.

    Tuesday, 2 October, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Frequent showers, becoming heavy or torrential in places through the morning, could become locally intense in Leinster soon ... winds SW 25-45 mph with some higher gusts by late afternoon and evening. Highs 13-16 C. Rainfalls of 10-30 mm possible. Hail and thunder quite possible as freezing levels are rather low.

    TONIGHT ... Blustery with more showers, less intense but another 5-8 mm likely. Lows 5-8 C.

    WEDNESDAY ... Windy and rather cold with hail or thunder in frequent showers, some brighter intervals, winds SW 20-40 mph veering to WNW 20-35 mph by afternoon or evening, and highs 12-15 C. Rainfalls about 10 mm.

    THURSDAY ... A few showers from several passing troughs, each gradually clearing east, in a moderate NW flow, allowing for some sunshine between showers. Rather cool with lows 4-7 C and highs 11-14 C.

    FRIDAY ... Partly cloudy, cool. Risk of morning frosts inland, lows -1 to +3 C and highs 11-14 C. A few showers possible mainly in Connacht. Northwest breezes of 15-25 mph.

    SATURDAY ... Partly cloudy to sunny, cool. Frosts in some inland districts, lows -2 to +3 C, highs about 11-14 C. Winds much lighter.

    SUNDAY ... Warmer, increasing cloud, probably dry for most but rain could move into western counties at times. Winds increasing again to SE 20-35 mph with lows near 3 C and highs near 16 C.

    MONDAY ... Rain or showers, mild, windy. Highs near 17 C.

    FURTHER OUTLOOK ... Unsettled but with a drying trend later in the week. Near normal temperatures.


    Forecasts for Britain

    TODAY ... Partly cloudy, showers and a few thunderstorms possible, with hail in many places by afternoon. Windy at times, SW 25-45 mph (higher gusts in exposed areas). Highs 13-16 C.

    TONIGHT ... Showers, cool. Moderate westerly winds. Lows 5-8 C.

    OUTLOOK ... Similar to the Ireland forecast as systems will be moving east rapidly therefore unsettled with near normal temperatures falling to about 12 to 14 C in the south by mid-week. Some parts of southern England may have heavier rainfalls on Wednesday (London by late afternoon into evening) from a wave that will largely miss Ireland earlier on its way east. The weekend could remain dry longer although timing is in any case rather uncertain for Nadine's final stages.


    Forecasts for North America

    The warm, dry spell that has been prolonged in the west is now centered more on the central regions as somewhat cooler air (8-12 C) moves into most of western Canada. This colder air is not pushing to the coast and it remains rather warm from Vancouver south (near 21 C). Highs near 24 C in southern Manitoba to 30 C in the plains states. Heavy rain is moving northeast across most of the eastern U.S. with high humidity and highs of about 22-25 C, some torrential downpours near the Delmarva peninsula.

    My local weather on Monday was pleasant with mostly cloudy skies but some warm sunshine at times, light showers in the vicinity.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    ALERT issued Tuesday 2 October at 1100h IST ...

    Risk of locally intense showers with some thunder and hail, and even the slight chance of waterspouts evolving into rope-tornado type (F0) that could do minor damage to property or trees in parts of Mayo, Galway, Roscommon and surrounding region after about 1300h with this activity moving east perhaps as far as Dublin and Meath before dying out due to lack of further daytime instability by 1700h. The back edge of a cloud mass visible on satellite imagery is well supported by a tight jet stream and slight troughing at upper levels. I have posted this on the Boards storm thread and asked for help in tracking by those familiar with severe storms, check over there during the event as I may be off duty depending on how this evolves. Risk is not high for significant damage, anything active might be on almost a micro-scale. Anyone wishing to chase should keep in mind the likelihood of rapid motion of cells and fast changes in structure. A low freezing level is the main element that causes me concern for severe development in this mix. The presence of cloud ahead of the most active feature could inhibit to some extent. So it is somewhat marginal but worth tracking, I believe.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer which can be seen at bottom of post 2565 dated 24 July 2012.

    Wednesday, 3 October, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Breezy to windy and rather cold with hail or thunder in frequent showers, some brighter intervals, winds SW 20-40 mph veering to WNW 20-35 mph by afternoon or evening, and highs 12-15 C. Rainfalls about 10 mm. Several waves of more active showers appear likely and in generally similar areas to yesterday, Galway around mid-day, Donegal towards late afternoon are featured on guidance maps for some possible downpours, so expect some minor flooding with water ponding on roadways.

    TONIGHT ... Little change but the slow cooling trend continues and if the showers let up after midnight, a slight risk of frost enters the picture, with lows generally 3-7 C.

    THURSDAY ... A few showers from several passing troughs, each gradually clearing east, in a moderate NW flow, allowing for some sunshine between showers. Showers may be heavy at times in the north. Rather cool with lows 4-7 C and highs 11-14 C.

    FRIDAY ... Partly cloudy, cool. Risk of morning frosts inland, lows -1 to +3 C and highs 11-14 C. A few showers possible mainly in Connacht. Northwest breezes of 15-25 mph.

    SATURDAY ... Partly cloudy to sunny, cool. Frosts in some inland districts, lows -2 to +3 C, highs about 11-14 C. Winds much lighter.

    SUNDAY ... Warmer, increasing cloud, probably dry for most but rain could move into western counties at times. Winds increasing again to SE 20-35 mph with lows near 3 C and highs near 16 C.

    MONDAY ... Rain or showers, mild, windy. Highs 14 to 17 C.

    FURTHER OUTLOOK ... Unsettled but with a drying trend possible later in the week. Near normal temperatures. One model (GEM) features a strong wind event around the end of next week, something to keep an eye on ... this would be from energy that catches up to Nadine's remnant low but from an origin over central North America.


    Forecasts for Britain

    TODAY ... Cloudy with showers or periods of rain, some becoming rather heavy late in the day across the south. Highs about 14 C.

    TONIGHT ... Showers, cool. Moderate westerly winds. Lows 5-8 C.

    THURSDAY ... Further showers, thunder or hail, some heavy downpours possible. Highs near 14 C.

    FRIDAY ... Showers or rain, clearing western regions later. Highs near 13 C.

    OUTLOOK ... The weekend could turn out mostly dry with rain edging into the west on Monday then turning heavy in the south on Tuesday. Saturday will be chilly then a milder southerly flow is likely to push at least as far north as central England and Wales.


    Forecasts for North America

    Systems are slow moving at present but evolving, the main change is that a weak frontal zone across the northern plains states is getting stronger and developing a larger thermal contrast that could change rain to snow in some higher (western) parts of the Dakotas and more definitely over the higher terrain in Colorado and Wyoming. Montana and Alberta will be cold enough for snow also but moisture may be limited as dry air seeps into the frontal zone, and further north where it begins to clear, temperatures will recover from morning frosts to near 7 or 8 C. Meanwhile the air mass over most of the U.S. south of this developing system is very warm, with almost summer-like temperatures of 27-31 C, but the rain continues on the east coast as a fresh wave of moisture moves north along a stalled but weak frontal boundary near the I-95 corridor.

    As part of the cooling trend over the inland west, a strong high has formed overhead (in southern B.C.) and we had a clear day with misty skies over the nearby mountains, somewhat cooler although the sun still feels quite warm, and a high of about 17 C. It's clear and quite chilly outside here, despite the urban heat island it is only about 5 C a quarter hour before midnight.

    Astronomy preview: The waning full moon is moving towards a close encounter with Jupiter (in visual terms) that is timed for Friday evening about 10 p.m. IST ... this means you'll be seeing them quite close in the east when they rise about midnight. An occultation is visible from parts of the southern hemisphere.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer which can be seen at bottom of post 2565 dated 24 July 2012.

    Thursday, 4 October, 2012
    ___________________________________


    Forecasts for Ireland

    TODAY ... Showers more frequent in the north and west, becoming heavy this afternoon in Donegal and nearby parts of other counties. Rainfalls generally about 3-7 mm but could reach 10-20 mm in northwest. Rather chilly again with highs 11-14 C, moderate SW to W winds 15-30 mph.

    TONIGHT ... Some clearing in north, chilly with frosts developing. A few showers possibly becoming sleety inland, and periods of light rain near the south coast where it won't be as cold. Lows generally -1 to +3 C but in the range of 4-8 C south.

    FRIDAY ... Most areas partly cloudy to overcast with sun dimmed by higher cloud, some further showers or light rain near south coast at times. Chilly with highs 10-13 C.

    SATURDAY ... A frosty morning for many places inland, lows about -2 to +3 C then sunny intervals, light winds, highs 10-13 C.

    SUNDAY ... Increasing cloud, milder, but a cold feel to the winds in exposed coastal locations (ESE 20-40 mph by late in the day near south coast). Rain may spread some distance inland from southwest coast. Highs 13-16 C.

    MONDAY ... Cloudy, milder, fog or drizzle, periods of light rain. This will be the dying circulation of Nadine. Highs 15-18 C. Rainfalls from this event likely to be moderate, 10-25 mm.

    TUESDAY ... Rain to showers, turning colder late in day. Highs near 15 C.

    OUTLOOK ... A northerly flow seems likely to develop with some weak influence of higher pressure off to southwest, but also somewhat unsettled as weak troughs drop south. Highs generally 9-12 C.

    Forecasts for Britain

    TODAY ... A dry and windy start for the east, with showers at times further west, then rain spreading across the south by late in the day or overnight. Highs near 14 C.

    TONIGHT ... Rain across parts of the south, cloudy central and clear intervals further north, frost likely inland north-central England and Scotland. Lows will be -3 to +2 C north and central, 4-8 C south.

    OUTLOOK ... Friday unsettled, cool, then Saturday dry and cool with some limited sunshine, Sunday cloudy and milder with rain arriving Sunday night west and Monday east. This will last a few days and peter out to showers or drizzle in a cool northerly flow mid-week.


    Forecasts for North America

    Rain to snow across parts of North Dakota, Manitoba spreading into Minnesota and northwest Ontario with strong northeast to north winds. The snow may be melting as it hits the ground at 2-3 C. Snow showers likely further west, clearing across northern prairie provinces, cold. Sunny and seasonable in British Columbia and parts of the northwest U.S. ... Warm weather will continue from the southern plains northeast to the Great Lakes, as rain moves off to the east. Highs around 25-30 C in many places.

    My local weather on Wednesday was sunny with a high near 16 C, crisp and cold at night under strong high pressure.


  • Registered Users, Registered Users 2 Posts: 14,583 ✭✭✭✭M.T. Cranium


    Important: Please note legal disclaimer which can be seen at bottom of post 2565 dated 24 July 2012.

    Friday, 5 October, 2012
    ___________________________________

    Astronomy note: Jupiter and the waning moon (gibbous phase) rise around midnight very close together after an occultation seen from parts of the southern hemisphere earlier in the night. By the time they are visible in Ireland, Jupiter would appear to be moving away from the Moon's north pole (rising a bit ahead of the Moon) and by the time I might see it here, there would be a considerable separation already, possibly half an hour to pass the same reference point.

    Forecasts for Ireland

    TODAY ... Most areas partly cloudy to overcast with sun dimmed by higher cloud, some further showers or light rain near south coast at times. There will also be showers in the Donegal Bay region, perhaps locally persistent. These could become sleety on hills with soft hail falling. Chilly with highs 10-13 C and even lower daytime temperatures at times in showers north.

    TONIGHT ... Sharp frost, in some cases for the first time this season, in many places inland, and even a few low-lying spots near coasts. Lowest temperatures -3 to +2 C.

    SATURDAY ... A frosty morning for many places inland, then sunny intervals, light winds, highs 10-13 C.

    SUNDAY ... Increasing cloud, milder, but a cold feel to the winds in exposed coastal locations (ESE 20-40 mph by late in the day near south coast). Rain may spread some distance inland from southwest coast. Morning lows about 3 to 7 C but some frost in Ulster, north Leinster (lows to -1 C). Highs 13-16 C.

    MONDAY ... Cloudy, milder, fog or drizzle, periods of light rain. This will be the dying circulation of Nadine. Lows 8-11 C, highs 15-18 C. Rainfalls from this event likely to be moderate, 10-25 mm.

    TUESDAY ... Rain to showers, turning a bit colder late in day. Lows 8-10 C and highs near 15 C.

    WEDNESDAY ... Mostly cloudy, misty, drizzle or rain, highs 11-13 C.

    OUTLOOK ... A northerly flow seems likely to develop with some weak influence of higher pressure off to southwest, but also somewhat unsettled as weak troughs drop south. Highs generally 9-12 C. Some rather cold maps appear on some models but it looks like what weather folks call a "toppler" meaning the pattern quickly changes to milder zonal westerly flow.

    Forecasts for Britain

    TODAY ... Further rain across the south, very windy in the Channel this morning but those gales are heading for Belgium and Germany. Somewhat breezy at times in England too, but generally 20-35 mph at most. Could reach 50 mph in east Kent. Further north, more dry than showery and some sunshine through extensive higher cloud layers, chilly. Highs 8-11 C.

    TONIGHT ... Frosts developing, lows -3 to +2 C rural, 3-7 C urban and south coast. Clearing except for persistent cloud in south.

    OUTLOOK ... Saturday cool with intervals of sunshine, Sunday cloudy and milder with rain arriving Sunday night west and Monday east. This will last a few days and peter out to showers or drizzle in a cool northerly flow mid-week north and Thursday-Friday south.


    Forecasts for North America

    The mid-continent trough will deepen and pull colder air into the central plains and central Rockies, and snow will continue across northern Ontario. A sharp cold front will develop and bring periods of rain with thunder to the lower Great Lakes, but south of that, warm sunny weather and southwest breezes will feel summery with highs near 30 C. This very warm weather links up to warmth in the desert southwest as the western cold front stalls across Utah and Nevada and dissolves under a strong ridge extending east from a centre off the Pacific coast, into Washington state and southern B.C. -- this produces near normal temperatures and sunny weather for those regions.

    My local weather on Thursday was sunny (again) and the ground is still baked dry here, quite unusual for early October when we can start to get daily rain in this climate. The high was about 18 C but the nights are rather chilly.


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