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FI Charts (T120+ onwards) Spring 2018 **READ MOD NOTE IN FIRST POST**

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Comments

  • Moderators, Science, Health & Environment Moderators Posts: 12,073 Mod ✭✭✭✭Meteorite58


    highdef wrote: »
    What does the synoptic composite with a scale of 9 to 60 represent?


    The scale represents the Theta E value, basically the measure of heat and moisture in the atmosphere.


    Theta E : http://www.theweatherprediction.com/habyhints/324/

    Click on the i symbol in blue on the weather.us page below and there is a quick tutorial giving all the other info on the synoptic chart such as jet vectors , 500mb height contours, surface pressure etc.

    https://weather.us/model-charts/euro/europe/synoptic-composite/20180528-0000z.html


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    +240 hrs out but as the calendar changes to meteorological Summer, the weather becomes thematically appropriate on the ECM 0z today with northern blocking to take off on the last day of May and on into the beginning of June. This forces the jet stream to go on a southerly track with low pressures coming in from the Atlantic on a northeasterly airflow. Basically, cold and wet. Quite a familiar sight ah?

    RJs1Eh0.gif

    The GFS is varying from run to run. For instance, the 06z was showing the high pressure moving back to the east throwing up another warm spell for early June. The 12z at the same time frame as the above ECM 0z shows high pressure just to the northwest of Ireland with cooler conditions than days preceding it. However, remaining settled despite this. After it, the high pressure builds more over top of us than to the northwest for the first week of June. So quite a disagreement between these two models. Remember that this is FI.

    If you'd like a continuation of more settled conditions, GFS is your friend right now. If you'd like a breakdown with much cooler and wet conditions, ECM is your friend at the moment.

    Gotta say, it is not normal for the GFS to be showing such a prolonged period of settled conditions. Usually, it wants us to go back to a normal pattern as soon as possible.

    All to play for. At the moment, I don't have any money on which is more likely as I think both have an equal chance.

    hPgNiil.png


  • Registered Users, Registered Users 2 Posts: 2,101 ✭✭✭squarecircles


    toasty.

    f9ob9v.jpg


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    What a chart from the GFS 12z for next Monday.

    tJjGHW7.png

    Meanwhile..... the CAPE for next Monday and Tuesday (28th and 29th May).

    zfw0J2C.png

    T1ZwdCo.png


  • Closed Accounts Posts: 1,576 ✭✭✭patneve2


    +15 at 850 hPa or not, temps next week will struggle to get above 18C on these coastal fringes. Damn sea breeze. Only thing missing is sea fog at this stage...In fairness though its looking very settled and dry right into the longer term!


  • Registered Users, Registered Users 2 Posts: 9,235 ✭✭✭sdanseo


    patneve2 wrote: »
    +15 at 850 hPa or not, temps next week will struggle to get above 18C on these coastal fringes. Damn sea breeze. Only thing missing is sea fog at this stage...In fairness though its looking very settled and dry right into the longer term!

    Yeah, we need a larger HP to park itself on top of us and stay there until..September? Please?

    I think the East will see a few days in the 20's. We had 19-20 on Friday and Saturday and also 10 days ago and this period will be significantly warmer if it comes off.

    Mayo would be positively freezing compared to Benelux / Western Germany next week. 36 degrees forecast.

    198-778PDE.GIF?21-6


  • Registered Users, Registered Users 2 Posts: 2,101 ✭✭✭squarecircles


    sdanseo wrote: »
    Yeah, we need a larger HP to park itself on top of us and stay there until..September? Please?

    I think the East will see a few days in the 20's. We had 19-20 on Friday and Saturday and also 10 days ago and this period will be significantly warmer if it comes off.

    Mayo would be positively freezing compared to Benelux / Western Germany next week. 36 degrees forecast.

    198-778PDE.GIF?21-6

    its all relative,the immediate east coast will be baltic compared to the west late this week into next weekend.
    Mayo will be boiling in comparison to Reykavik. etc etc

    comparing inland continental europe to the west coast of ireland is a bit pointless.

    anyways looks like the heat is locked in for some,
    fire up the barbie.


  • Registered Users Posts: 4,693 ✭✭✭SleetAndSnow


    Delighted to see this heat coming. It would have to be the week of my summer exams though wouldn't it? Oh well i can glaze out the window at it!

    Interesting too see how the charts will be developing the rest of June, which iirc can be an iffy enough month? Sometimes warm othertimes meh


  • Registered Users, Registered Users 2 Posts: 2,101 ✭✭✭squarecircles


    a cheecky 27 in the northwest,meanwhile london would easily skip to the magic 30 and above. The BENELUX on fire as usual.They must all have fabulous tans in the BENELUX.

    ukmaxtemp.png


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  • Registered Users, Registered Users 2 Posts: 9,235 ✭✭✭sdanseo


    sdanseo wrote: »
    Mayo would be positively freezing compared to Benelux / Western Germany next week. 36 degrees forecast.
    comparing inland continental europe to the west coast of ireland is a bit pointless.
    a cheecky 27 in the northwest,meanwhile london would easily skip to the magic 30 and above. The BENELUX on fire as usual.They must all have fabulous tans in the BENELUX.

    I'm a tad confused, you don't want talk of Benelux but you talk about Benelux?

    The post was light hearted, and the point was that everywhere is well above normal. We regularly point to anomalies further east during an easterly to give us an idea of what's coming.


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    Northern blocking idea by the ECM 0z is gone on its 12z run with the high pressure building over us again, so more in line with the GFS on this run now.

    9HHTnjk.gif

    Not as warm as GFS 12z but still quite a warm Sunday by the ECM. Quite slack gradients to the south and west of both the UK and Ireland.

    oKg27tg.png

    Ex0X1cf.png


  • Moderators, Science, Health & Environment Moderators Posts: 12,073 Mod ✭✭✭✭Meteorite58


    GFS 2m Temperature Anomalies looking warm until the end of the month.

    rLUyb78.gif


  • Moderators, Science, Health & Environment Moderators Posts: 12,073 Mod ✭✭✭✭Meteorite58


    This is way out but with all that heat early next week and potential for humidity and moisture in the atmosphere coming in from Europe there are some massive CAPE readings showing up for Ireland and more so the UK. Interesting to see if it happens.

    0TTNxIS.gif


  • Registered Users, Registered Users 2 Posts: 9,235 ✭✭✭sdanseo


    The GFS Para for next Wednesday (caveat: it's 9 days away) is absolutely stunning:

    192-778PUK.GIF?21-12


  • Registered Users, Registered Users 2 Posts: 23,918 ✭✭✭✭Kermit.de.frog


    ECM bringing temperatures up to the mid - high twenties next weekend in the midlands, west and northwest. Always cooler toward east and south coasts.

    Looks pleasant but there is an increasing risk of thunderstorms with time.

    In fact out to 240 hrs is real summer weather that i'm sure we'll all enjoy. :)


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  • Registered Users, Registered Users 2 Posts: 2,101 ✭✭✭squarecircles


    sdanseo wrote: »
    I'm a tad confused, you don't want talk of Benelux but you talk about Benelux?

    The post was light hearted, and the point was that everywhere is well above normal. We regularly point to anomalies further east during an easterly to give us an idea of what's coming.




    im a tad confused too,
    you talk of benelux,
    i talk of benelux,
    i never say dont talk of benelux.
    you say i say you shudnt talk of Benelux
    i take back that making such comparisons is pointless.
    talk about whatever,and where ever you like.



    you could have made the comparison without deriding the
    temperatures forecast for the west next week.Its been a long cold winter and spring.
    but as you say it was light hearted but in my humble opinion
    its far from "freezing"!


  • Registered Users, Registered Users 2 Posts: 9,235 ✭✭✭sdanseo


    im a tad confused too,
    you talk of benelux,
    i talk of benelux,
    i never say dont talk of benelux.
    you say i say you shudnt talk of Benelux
    i take back that making such comparisons is pointless.
    talk about whatever,and where ever you like.



    you could have made the comparison without deriding the
    temperatures forecast for the west next week.Its been a long cold winter and spring.
    but as you say it was light hearted but in my humble opinion
    its far from "freezing"!

    I'm just gonna thank think and let's move on :D


  • Registered Users, Registered Users 2 Posts: 9,786 ✭✭✭wakka12


    ECM bringing temperatures up to the mid - high twenties next weekend in the midlands, west and northwest. Always cooler toward east and south coasts.

    Looks pleasant but there is an increasing risk of thunderstorms with time.

    In fact out to 240 hrs is real summer weather that i'm sure we'll all enjoy. :)

    Poor leaving cert students


  • Registered Users Posts: 1,591 ✭✭✭gabeeg


    It's a right of passage


  • Registered Users, Registered Users 2 Posts: 23,918 ✭✭✭✭Kermit.de.frog


    sdanseo wrote: »
    The GFS Para for next Wednesday (caveat: it's 9 days away) is absolutely stunning:

    192-778PUK.GIF?21-12

    giphy.gif


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  • Moderators, Science, Health & Environment Moderators Posts: 12,073 Mod ✭✭✭✭Meteorite58


    WbseMgB.png



    m42ixlZ.gif


  • Registered Users, Registered Users 2 Posts: 23,918 ✭✭✭✭Kermit.de.frog


    WbseMgB.png

    giphy.gif


  • Registered Users, Registered Users 2 Posts: 9,972 ✭✭✭spookwoman


    WbseMgB.png



    tenor.gif
    Am I reading that right as south east and waterford thunder storms?


  • Registered Users, Registered Users 2 Posts: 6,325 ✭✭✭highdef


    spookwoman wrote: »
    Am I reading that right as south east and waterford thunder storms?

    Probably most of the Eastern half of the country, assuming the charts play out and all the other ingredients required are in place.

    Very early in the season for it though so I'll remain suspicious.


  • Moderators, Science, Health & Environment Moderators Posts: 12,073 Mod ✭✭✭✭Meteorite58


    spookwoman wrote: »
    Am I reading that right as south east and waterford thunder storms?

    These set ups hard to predict untill a day or so before and even at that can be hard to pin point, the charts have been showing huge CAPE potential early days of next week, the ECM also showing Sun with potential for Thunderstorms.

    I would have thought very rare to see a chart like the one above for Ireland.

    Will be watching closely no doubt!


  • Registered Users, Registered Users 2 Posts: 5,970 ✭✭✭Storm 10


    meteroite58 Have we any chance of a storm in the West over the weekend


  • Moderators, Science, Health & Environment Moderators Posts: 12,073 Mod ✭✭✭✭Meteorite58


    Storm 10 wrote: »
    meteroite58 Have we any chance of a storm in the West over the weekend

    Sticking my neck on the block here , could be wrong ( often am :) ) but I think yes. Looking at very warm temperatures and high humidity and rain bearing cloud coming from SE / E out of Europe. Huge amount of moisture in the atmosphere with potential for very heavy rain/ showers perhaps Sun/ Mon.

    Sat more so in the Southern half perhaps but not ruling out the W
    Sun perhaps widespread
    Mon widespread ( potential for some severe thunderstorms breaking out perhaps )
    Tues widespread ( perhaps but not too sure at this stage again potential for severe thunderstorms ).

    Just my very amateur opinion. A very interesting spell of weather watching and learning coming up.


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    Such an odd and unique pattern that I have not seen in my model watching years until now. Up to the first few days of June, it is just a slack easterly flow with rather lower pressure over Ireland, England and Wales but the north and Scotland staying very dry throughout. Through the first week of June, the high pressure from the north just ridges over us and to the east dragging up further warm temperatures. The jet stream is way to the north but the air is just too unstable over us until early June on the models for really settled weather to take place.

    Still no sign of a breakdown in this.

    The GFS 12z is cooler compared to the 0z especially out west interestingly enough.

    OOxDHxV.png

    ISw7ojz.png


  • Registered Users, Registered Users 2 Posts: 9,235 ✭✭✭sdanseo


    That consistency I mentioned in the GFS isn't being borne out. Consistent downward high predictions in the last 2 or 3 days.

    For the east all dampened significantly by the easterly breeeze and associated banks of cloud. 14 degrees and dull today.

    For once, I wish this was coming from the west!


  • Registered Users, Registered Users 2 Posts: 7,182 ✭✭✭pauldry


    it looks like Ireland just attracts cool temperate conditions. Now a cooler pool over whole country. still overall pattern warmer than normal but not as good as it looked a few days ago.

    Even yesterday my phone had forecast the next 5 days 21 20 22 23 20 but today it says 17 16 19 18 17


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  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    Warm and wet is the basic summary for the outlook. GEFS 12z for Dublin perfectly show it. Gradually becoming cooler but still staying on the warmer than average side of upper air temperatures.

    uuEr4Co.png

    Meanwhile, the GFS 12z today is still staying with the same solution of continued unstable easterlies for the rest of May into early June before an area of high pressure builds over top of the country (it briefly attempts to retrogress to Iceland on the 3rd/4th June).

    EkK2yIr.png


  • Registered Users, Registered Users 2 Posts: 7,182 ✭✭✭pauldry


    yesterday met eireann said monday would be 25c or mid twenties today 15 to 19c "fresher than of late"

    certainly all these thundery outbreaks at weekend look like signalling cooler weather in now


  • Registered Users, Registered Users 2 Posts: 18,230 ✭✭✭✭JCX BXC


    pauldry wrote: »
    yesterday met eireann said monday would be 25c or mid twenties today 15 to 19c "fresher than of late"

    certainly all these thundery outbreaks at weekend look like signalling cooler weather in now

    Reading MT's forecast he certainly doesn't seem to think so!


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    GFS 0z still has no changes! Consistent easterly winds and high pressure keeps reforming itself too just to the north of us. Did somebody forget to tell the GFS that Summer is around the corner? :P

    A5BD3H6.png

    b15DmOc.png

    IUQQ8Uj.png

    LJTAQeI.png


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    Finally some changes on the GFS model!

    The retrogression of the high becomes more influential on the 0z than before and in fact, a northerly to northeasterly takes place for the first week of June. Becoming very cool and at times, unsettled too.

    onU43ls.png

    yyTulN9.png

    nHvrAVn.png

    pmR6TXD.png

    For those that don't want this, it's an outlier in the GFS ensembles.

    OAgl4SD.png


  • Registered Users Posts: 4,693 ✭✭✭SleetAndSnow


    Hopefully that's not what we get. Settled warm conditions please. It's an outlier for now but hopefully the next runs don't show unsettled weather.


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    Hopefully that's not what we get. Settled warm conditions please. It's an outlier for now but hopefully the next runs don't show unsettled weather.

    It's a huge change on yesterday's 0z and well, it seems the GFS ensembles have upgraded the warmth and dry spell regardless of the OP run this morning.


  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    And.... GFS 12z brings the settled solution back. Like yesterday's 0z now again with an initial attempt at retrogression of the high on the 3rd/4th but then comes back down over us. It weakens towards the end of that week before at the end of FI, we get another ridge from the Azores.

    loOrkXs.png

    fJZBOWO.png

    AjSq61Q.png

    Still warm by next Saturday!

    HqX5wOR.png


  • Moderators, Science, Health & Environment Moderators Posts: 12,073 Mod ✭✭✭✭Meteorite58


    Warm outlook . The Jet taking a very Northely route for another week or so going by today's charts.

    tempresult_uhj9.gif


    tempresult_uax3.gif


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  • Registered Users, Registered Users 2 Posts: 13,666 ✭✭✭✭sryanbruen


    GFS 12z is a very warm run again with lots of warm weather throughout. This chart at +312 hours is nice to look at. 564 dam line in through Ireland. I think the atmosphere has gone mad.

    LIF6WBY.png


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