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snowy weather

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Posts posted by snowy weather

  1. 14 minutes ago, snowy weather said:

    Was expecting a huge downgrade as that usual happens next  morning but its looking better and better here in Crawley. Metoffice is adamant we will get continuous  snow from Saturday night to Monday night. And with temps well below zero and staying that way till Thursday/Fridsy  the snow could be around for a while. I'm so excited hhaha. 

    As there been a westward shift? The amber warning has been creeping ever more slowly towards Crawley. 

  2. 34 minutes ago, Met4Cast said:

    I don't buy into this. The cold hasn't just suddenly vanished, it's still there in the Arctic. The reason Europe hasn't got deep cold established is due to the persistent nature of the Russian & Siberian high preventing a route for deep cold to move into Europe. That same HP is part of the reason we have an up-coming SSW, too. Short term pain = long term gain in this case.

    We're seeing an increasingly stagnant cold pool developing in situ across the UK and Europe as we go through into January, marginal events will slowly become less marginal. Once we see the high retrogress towards Greenland and a trough drop down into Scandi, deep cold isn't a million miles away. Exceptional, exceptional ensemble mean! 

    UK.thumb.png.a9a22703de77a689a3a92143a97c28e7.pngMEAN.thumb.png.26fb0c0c942023a14e37086f1fd1d156.png

    Thank you for this. I understand. Hopefully it comes off

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  3. 1 hour ago, Steve Murr said:

    Its just the 'classification' of the vortex

    when the 10mb winds go positive - thats the date the PV has formed-

    It wont have a bearing on winter just yet as we need to see how the strength builds through October - Nov-

    The weak sun should impact it in terms of making it weaker-

    Also over the last decade - areas of low heights over the NH (50-70N) in Autumn have been notably absent-

    ENSO signal will be very weak & QBO whilst decending Westerly should still be weak Easterly @50HPA through October ( currently around -22 ) so again a low impact weak vortex event...

    So far so good in the world of the stratosphere...

    Thanks for the explanation.

  4. 19 hours ago, Steve Murr said:

    Today is day 1 of 2018 Winter vortex.!!! 

    Positive 0.1M/S - An early start for the PV.

    Im quite excited this winter as the prospect of something very tasty coming along-

    Sea ice anomalies in the 2 key regions very significant in terms of worse than usual & the CFS modelling of the stratosphere showing that as we start to hit the colder months through Autumn so the strat may run much lower than usual..

    Still about 6 weeks to go before we see the reality - but early excitement builds..

     

    Great work @Mattias

    Todays CFS runs see a SSW mid November - similar to 1962..

    Why is the polar vortex forming a food think?

    I read this  https://www.metoffice.gov.uk/learning/atmosphere/polar-vortex

    And I'm just a little confused. Surely it is better for the polar vortex to not form so cold air can come down?

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