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Turning Colder Thursday - Wintry Showers/Snow to High Ground

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12467…12

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    #92
    snaps
    Registered Users Posts: 7,138 ✭✭✭snaps


    Slashermcguirk wrote: »

    The cold has to start somewhere. Oslo also starting to see its first snowfall of the winter. Poland looking very mild but parts of Germany like Munich starting to push down towards 0.

    I really think December could be an interesting month.

    Well I'm living in southern Poland, we have had the latest snowfall ever since I've lived here, we normally have snow from October, but this year the first snowfall appeared last weekend (about 10cm). Since last Saturday it hasn't got above -2 where I live, we currently are under influence of high pressure over Russia so have a south eastly flow. Last night -14 and it is still -6 at 11.00. Granted this weekend looks milder, maybe up to 10c due to the low pressure sitting in the English channel.

    Even though we have some cold here, the fact that its so dry all the time, Winter, Spring, Summer and Autumn are all extremely dry now. The dryness gives my region a true meaning "Sucha Beskidy" which translates to Dry Beskidy (Beskidy is a mountain range).


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    #93
    pauldry
    Registered Users Posts: 6,883 ✭✭✭pauldry


    Think a slight downgrade on yesterday. Most showers now rain or hail though could be whitening hail and sleet at night tonight and tomorrow night.


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    #94
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    What about this system coming over from Scotland on Friday? Not sure if it will materialise but some models are predicting snow.


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    #95
    Oscar Bravo
    Registered Users Posts: 10,066 ✭✭✭✭Oscar Bravo


    Status Yellow - Snow/Ice warning for Donegal

    Met Éireann Weather Warning

    Heavy wintry showers of hail, sleet and snow expected tonight (Wednesday) and Thursday with reduced visibility and accumulations likely in places.

    Valid: 00:01 Thursday 03/12/2020 to 23:59 Thursday 03/12/2020

    Issued: 11:00 Wednesday 02/12/2020


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    #96
    pauldry
    Registered Users Posts: 6,883 ✭✭✭pauldry


    Yes the hills of Donegal are always a good bet. roads on these will be icy

    That system from Scotland will likely bring sleet at best


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    #97
    nacho libre
    Registered Users Posts: 16,642 ✭✭✭✭nacho libre


    pauldry wrote: »
    Yes the hills of Donegal are always a good bet. roads on these will be icy

    That system from Scotland will likely bring sleet at best

    Yes, they are favoured, but it did not specify high ground. So perhaps some places lower down could see snow at night?

    In fact the latest Met.ie forecast is definitely an upgrade:

    "Widespread showers will persist tonight, merging to longer spells of rain over the southern half of the country. Some showers will be heavy and thundery with hail, and some turning to sleet or snow, especially on high ground in the northwest. Cold with lowest temperatures of 0 to 3 degrees in moderate southwest winds."


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    #98
    Kermit.de.frog
    Registered Users Posts: 23,477 ✭✭✭✭Kermit.de.frog


    Chance of a snowy surprise early Friday morning in the east and south later perhaps...

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    Certainly possible with winds off shore if the trough moves in that far west.

    iconeu_uk1-3-55-0.png?02-10


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    #99
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    If the showers we’re having right now are an indication of anything, tonight might be quite exciting!

    Very heavy and prolonged.


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    #100
    lawred2
    Registered Users Posts: 24,281 ✭✭✭✭lawred2


    Nqp15hhu wrote: »
    If the showers we’re having right now are an indication of anything, tonight might be quite exciting!

    Very heavy and prolonged.

    blue skies and sun here in Dublin


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    #101
    highdef
    Registered Users Posts: 6,140 ✭✭✭highdef


    Nqp15hhu wrote: »
    Hmmm, it’s hard to know what will happen. Again the ICON has freezing levels of 400-500m on Thursday, so would that not suggest snow to relatively low levels? I mean the snow will not turn to rain that quickly.

    You would be surprised. I have some video on youtube
    that is a quick timelapse drive around my home turf in January 2013. The beginning of the video is the lowest altitude where there is virtually no sticking snow. About 40 to 60 seconds in the video is the highest altitude, less than 60m higher up, but snow is sticking readily to all surfaces and is beginning to accumulate.

    So in short, a mere difference in altitude of less than 60m was the difference between wet ground and accumulating snow. This is approximately the height of Liberty Hall (59m) in Dublin, which means it's the equivalent of accumulating snow on the roof of the building whilst at the same time it's wet ground and puddles at street level.


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    #102
    Kutebride
    Registered Users Posts: 1,098 ✭✭✭Kutebride


    Overcast and freezing cold and a shower of rain. Meath.


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    #103
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    That last almost horizontal deluge was nearly solid. ie almost icy hail. I stood in the kitchen watching it batter the window trying to work out was it rain or hail.

    It will get very interesting later..:eek:;):D


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    #104
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    Nqp15hhu wrote: »
    If the showers we’re having right now are an indication of anything, tonight might be quite exciting!

    Very heavy and prolonged.

    We think alike! I did not read this before I posted... I have a feeling about this ..


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    #105
    igCorcaigh
    Moderators, Recreation & Hobbies Moderators Posts: 11,095 Mod ✭✭✭✭igCorcaigh


    Graces7 wrote: »
    We think alike! I did not read this before I posted... I have a feeling about this ..

    Cork will probably get a bit of sleet. If we're lucky :(


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    #106
    US2
    Registered Users Posts: 2,651 ✭✭✭US2


    Average December week this is looking like. Suprised with all the hype


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    #107
    Kermit.de.frog
    Registered Users Posts: 23,477 ✭✭✭✭Kermit.de.frog


    In relation to Donegal and Sligo the showers turning to sleet and snow this evening but probably a wet mix to the lowest levels until around midnight.


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    #108
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,826 Mod ✭✭✭✭Meteorite58


    The Hi Res models now coming into focus. I would probably go with the AROME ahead of the others.

    A few local showers today, not much here outside Tralee, 7.9C down from 9.1C , Dp 4.5C , windchill 4.8C



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    #109
    joeysoap
    Registered Users Posts: 6,234 ✭✭✭joeysoap


    Cold in Dundalk but dry so far.overcast now after a very bright and sunny morning.


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    #110
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,826 Mod ✭✭✭✭Meteorite58


    AROME not one to overdo it, more conservative then other models like the EURO 4 still showing some very low DP's going into Thurs evening.

    CAPE levels not bad over water, will probably send in big Cb's loaded with hail along the coasts and maybe a bit inland, will see if any become electrified.

    The Sat simulation showing up well the nature of the cloud structure coming in from the NW tomorrow.

    The SW tomorrow evening hmmm....

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    #111
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    Kermit.de.frog wrote: »
    In relation to Donegal and Sligo the showers turning to sleet and snow this evening but probably a wet mix to the lowest levels until around midnight.

    Yes this smacks of a typical northwesterly with the snow level dropping gradually with each hour, turning to snow about 11-12am.

    I would think the snow level is about 500-600m right now.


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    #112
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    highdef wrote: »
    You would be surprised. I have some video on youtube
    that is a quick timelapse drive around my home turf in January 2013. The beginning of the video is the lowest altitude where there is virtually no sticking snow. About 40 to 60 seconds in the video is the highest altitude, less than 60m higher up, but snow is sticking readily to all surfaces and is beginning to accumulate.

    So in short, a mere difference in altitude of less than 60m was the difference between wet ground and accumulating snow. This is approximately the height of Liberty Hall (59m) in Dublin, which means it's the equivalent of accumulating snow on the roof of the building whilst at the same time it's wet ground and puddles at street level.

    I am talking about falling snow. The general rule is 300m below the freezing level for the snow to melt to rain or sleet.


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    #113
    SeaBreezes
    Registered Users Posts: 1,524 ✭✭✭SeaBreezes


    igCorcaigh wrote: »
    Cork will probably get a bit of sleet. If we're lucky :(

    Dont be daft. Sleet counts as snow. Shield wont allow it :-(


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    #114
    nacho libre
    Registered Users Posts: 16,642 ✭✭✭✭nacho libre


    US2 wrote: »
    Average December week this is looking like. Suprised with all the hype

    No one is expecting a foot of snow on the ground, if we are lucky some places may see a slight dusting overnight, but accumulations will probably be confined to higher ground. I think some of us are just happy to see some snow falling. It might also be a welcome distraction for some people...


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    #115
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,826 Mod ✭✭✭✭Meteorite58


    Approaching weather from the WNW, becoming increasingly cold and veering more to the NW and N.

    Some sleet showing up on radar in the N .

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    #116
    Graces7
    Registered Users Posts: 32,634 ✭✭✭✭Graces7


    nacho libre wrote: »
    No one is expecting a foot of snow on the ground, if we are lucky some places may see a slight dusting overnight, but accumulations will probably be confined to higher ground. I think some of us are just happy to see some snow falling. It might also be a welcome distraction for some people...

    Well said. Thank you . Dark here already and I know that coasts come off poorly for snow, but happy to share in others' pleasure.

    Still poised for that snowman and wish I had bought carrots! A snowman is not right without a carrot for a nose.. Will a banana work? lol


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    #117
    Gaoth Laidir
    Registered Users Posts: 8,219 ✭✭✭Gaoth Laidir


    Latest wet-bulb temperatures. Need them to come down to <0.5 °C for snow, except in the heavier showers.

    534939.png


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    #118
    Nqp15hhu
    Banned (with Prison Access) Posts: 2,254 ✭✭✭Nqp15hhu


    The temp has sat at 4.9c for 2 hours. Why do these oceanic air masses always cool down in steps? From memory the Continental air masses usually drop down to minimum temps within an hour or two?

    We will probably have to wait until after midnight before it snows.


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    #119
    Billcarson
    Registered Users Posts: 1,514 ✭✭✭Billcarson


    Wonder how much cold rain I will get over the coming days, beats warmer rain anyway. At least it wont be mild


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    #120
    pad199207
    Registered Users Posts: 7,118 ✭✭✭pad199207


    Billcarson wrote: »
    Wonder how much cold rain I will get over the coming days, beats warmer rain anyway. At least it wont be mild

    Cold rain and bitter cold? Can’t think of anything worse tbh.


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    #121
    Clonmel1000
    Closed Accounts Posts: 3,047 ✭✭✭Clonmel1000


    Billcarson wrote: »
    Wonder how much cold rain I will get over the coming days, beats warmer rain anyway. At least it wont be mild

    Seriously?


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