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ceppa88

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Posts posted by ceppa88

  1. The last map we generally only really use in Summer to show LI (Lifted Index) and CAPE.. Potentially available energy?) 

     

    The lower the LI the more unstable the atmosphere is.. For instances.. Its basically the temperature of the air particles in the air and ground??

     

    In america they could have 6000KJ of CAPE and a LI of -8 This is SERIOUS thunderstorm territory.. 

     

    Here say average summer storms... 500-600KJ Cape AND A li OF SAY -3 Normal thunderstorms.. 

     

    • LI 6 or Greater, Very Stable Conditions
    • LI Between 1 and 6 : Stable Conditions, Thunderstorms Not Likely
    • LI Between 0 and -2 : Slightly Unstable, Thunderstorms Possible, With Lifting Mechanism (i.e., cold front, daytime heating, ...)
    • LI Between -2 and -6 : Unstable, Thunderstorms Likely, Some Severe With Lifting Mechanism
    • LI Less Than -6: Very Unstable, Severe Thunderstorms Likely With Lifting Mechanism
     

    Someone with more knowledge please correct any mistakes..

    thank you so much !!super clear
  2. No not a hunch at all..

     

    ONE.. Disturbance of the east coast of UK.. WITH a some pretty tight isobars..

    airpressure.png

    Although not much the North sea has some convective element too it.. 

     

    ukcapeli.png

     

     

    But this is Sunday and it looks like something is cropping up for tomorrow night ALREADY!!!  :yahoo:

    I hope i m not asking to much but can you explane what is the last map and how you read it??

  3. ECM day 4

    ECU1-96.GIF?26-0

    That shortwave is moving down the north sea, again the risk of showers or longer periods of potential snow again (850s around -5C over our region). The UKMO shows a shallower wave

    U96-21UK.GIF?26-18

     

    Another interest over the coming days. Though Wednesday night into Thursday offers the best potential within the reliable timeframe.

    Do you think with an event like this even in london is possible to accumolate something??

  4. This would be my summary over the next 24 hours, A band of snow moving east across the region from around 10-11pm tonight-

     

    The milder air in the warm sector will eat into the band from the SW, so coastal West sussex up into Surrey may be sleet & rain on the coast.

    London ( west ) North of London, oxfordshire should see heavier bursts.

     

    Kent ( mainly west ) Essex - mainly west probably bursts of light snow. 

    East kent, east Essex - Suffolk & Norfolk may well just stay dry.

    Sussex ( E) probably dry & cold

    Sussex (W) rain sleet & snow ( snow in the northern part)

     

    There is a stalling point where it just stops dies & slides away south which looks like straddling NW kent & South Essex- however don't let that excite you its all light or nothing.

    Depths- midlands up to 5cm

    North west London or SE Oxfordshire - maybe 1-4cm.

    The stall zone-  trace - 1cm.

     

    If you like seeing snow falling then chances are you will away from the south, if you like sledging etc take a drive towards Dunstable downs.

     

    S

     

    The

    Are you including even nw1 ??or with north west you mean out of the center??

  5. I'd imagine, that if anything were to happen, (MetO warnings), for snow, then it will occur tomorrow.

    Still alot can change, so seeing as it's still only Friday, no point getting hung up about what's going to happen next week, when we can't nail down the forcast yet for 48 hours time.

    I m totally agree with you , the tomorrow gfs 0z will be fondamental!

  6. Hi madmuch,

    it is not looking bad the recent GFS hopefully its on its own, bear in mind this is 10 days out and it looking certain 7> cold spell even longer, I have noticed over the last few runs that the SE has been turned up a notch if you want some snow. With warmer DPs to the west of this region so potentially quite good place to see some snowfall. Regarding snow you may see some on weekend, been some upgrades. It really will help if you are a few miles inland away from coasts. Initially it might alternate between rain & snow. Further out looks better for something more decent. Btw yes it will have died down by then. :)

    attachicon.gifimage.jpgattachicon.gifimage.jpgattachicon.gifimage.jpg

    How do you read this card?

  7. Few goodies from MOD thread come to think of it fax - for Saturday is interesting... Thoughts?

    attachicon.gifimage.jpg

    ECMWF holding steady so far seems trival going on about snow when we have some potential disruptive weather on our doorstep...time for me to take a step back. :wink:

    attachicon.gifimage.jpg

    Hello guys ,

    I m new in the forum and i m trying to understand something about the uk wheater but is much more different than the tuscany , but for what i can see we should have nice probability to see the white lady soon even in london right??

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