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Charts ( up to T120) Autumn 2025 **READ MOD NOTE IN FIRST

  • 31-08-2025 06:52PM
    #1
    Moderators, Science, Health & Environment Moderators Posts: 17,804 Mod ✭✭✭✭


    Mod Note:

    This thread is for posting/discussing/analyzing CHARTS in the shorter range timeframe up to T120 hours (next 5 days) for Autumn 2025.

    If your post does not specifically relate to a chart then it doesn't belong here - Off topic posts will be moved

    Thank you.

    ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    The final week of Summer 2025 saw a big pattern change back to unsettled and quite cool Atlantic conditions. This looks like continuing well into the first week of September and possibly beyond with no shortage of cloud, wind and rain or showers over the coming week.

    image.png

    The Green blop of slime will control our weather over the coming week with rain most if not all days and fairly windy as well.

    image.png

    On and on and on it goes

    image.png

    Rainfall while not overly heavy, will be frequent in the form of showers and some fairly wet days can be expected, but amounts not excessive.

    image.png

    Temperatures over the coming week will be mostly below average especially across western areas where 15C+ could be a struggle. Temperatures in the east may still reach 18C at times but feeling relatively cool and fresh everywhere over the coming week. The suntan lotion and garden furniture can be safely put away for the time being.

    Post edited by Gonzo on


Comments

  • Registered Users, Registered Users 2 Posts: 568 ✭✭✭Gipo3


    this thread is titled FI?



  • Moderators, Science, Health & Environment Moderators Posts: 12,951 Mod ✭✭✭✭Meteorite58


    Models for later Sat through to Monday differing a fair bit at this stage. Showing various bands of heavy rain, all seem to show Sat night into Sunday as moderate to heavy rain crossing the country and blustery with it and thereafter it begins to become unclear. ECM 12Z is a bit of an outlier I reckon, latest output is a stark difference to earlier runs being much more benign than earlier.

    How close the pivoting LP comes to our shores and what track is very unclear but a spell of windy blustery and wet weather possible around Monday. Models showing secondary lows, waves forming and the original low moving in over Ireland by some so a lot to be resolved over the coming days. Not showing anything too strong at this stage but some part of the country could get clipped by stronger winds but not showing storm at this stage anyway.

    Some areas look to get big rainfall accumulations but again unclear depending on the tracks, models showing the SW initially on Sat/ Sun getting heavy rains.

    Seeing some very mild temperatures overnight Sat into Sun. Thunderstorms possible at times over the weekend, maybe in those unstable fronts later Sat into Sun : showing high Theta E and W , moist warm buoyant airmass coming up from the SW with high DP's.

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