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Model output discussion - deep cold inbound?


Paul
Message added by Paul,

It's a busy time right now, so please ensure you only post about the model output in this thread. 

For local snow discussion and will it snow posts, please use the regional threads
And for more general chat please use the chat, moans and ramps thread.

There's now also a cold spell chat and discusison thread.

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Posted
  • Location: Waddingham, Lincolnshire. (9m asl)
  • Weather Preferences: Anything newsworthy, so long as it's not in the Daily Express
  • Location: Waddingham, Lincolnshire. (9m asl)

GFS Op goes onto be an outlier later on in the GEFS as it tries to keep the cold in for longer rather than a snowy breakdown from the South West as some other models are suggesting but is firmly supported until then (also raising the prospect of building Scandi heights and extending the cold). We have cross model agreement guys, meaningful Easterly at 96hrs with pretty similar placement for the limpet low from all. 
406290659_gfs-london-gb-515n-0e3.thumb.jpeg.edf7ac917cf96dffc8701e7729a90e6b.jpeg

The whole country swathed in -8 or better by Monday night and significantly earlier than that the further north you go. Finally. My first BOOOM!

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Edited by supernova
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Posted
  • Location: Aberporth S W Wales
  • Location: Aberporth S W Wales
19 minutes ago, Battleground Snow said:

Channel low at 144, south buried!

Sorry to be a party pooper, but uppers are a bit dodgey to make that statement. .. maybe the southern midlands buried

snow depth.png

Edited by KTtom
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Posted
  • Location: Market Rasen
  • Weather Preferences: Snow Frost Fog Thunderstorms
  • Location: Market Rasen
2 minutes ago, Battleground Snow said:

Channel low at 144, south buried!

Rain at coast I’m afraid the uppers aren’t low enough high ground would do well 

6F345D0B-F30E-4219-B4D2-F951B33FEA68.gif

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Posted
  • Location: Droitwich
  • Weather Preferences: Cold cold cold!!
  • Location: Droitwich
9 minutes ago, snowice said:

Fantastic 120image.thumb.png.506b2528e91a7353334ffde80aa980c8.png

We are about to be swallowed by the beast as you can see in this chart

Fantastic sets of models this morning and counting down nicely ❄️❄️

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Posted
  • Location: Orpington Kent.
  • Location: Orpington Kent.
1 minute ago, Battleground Snow said:

No you are incorrect, the wind is coming in due east, it will be all snow even on the beaches

Serious question but his with uppers of -1 in the south east

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Posted
  • Location: Peterborough
  • Weather Preferences: Snow and frost in the winter. Hot and sunny, thunderstorms in the summer.
  • Location: Peterborough

The ECM again shows low pressure moving back towards the U.K. from the continent, however it is a much bigger swing back after clearing into France earlier in the run. I would have thought there would be a front along that which would bring heavy snow before turning briefly less cold in the south (850s yes but possibly not at the surface).

Cold/very cold for all again at day 7.

Edited by Captain Shortwave
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Posted
  • Location: Darlington
  • Weather Preferences: heavy convective snow showers, blizzards, 30C sunshine
  • Location: Darlington

168 ECM utterly marvellous a lot of the country bathed in -10s. Loads of snow showers piling in southerly jet and the ecm toying with further height rises to the north. I firmly believe this is a real option now. This could become legendary!!! 

ECH0-168.gif

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Posted
  • Location: Waddingham, Lincolnshire. (9m asl)
  • Weather Preferences: Anything newsworthy, so long as it's not in the Daily Express
  • Location: Waddingham, Lincolnshire. (9m asl)
34 minutes ago, Captain Shortwave said:

The ECM again shows low pressure moving back towards the U.K. from the continent, however it is a much bigger swing back after clearing into France. I would have thought there would be a front along that which would bring heavy snow before turning briefly less cold in the south (850s yes but possibly not at the surface).

And the colder uppers quickly return so surely worst case back edge snow as the low disrupts east?

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Edited by supernova
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Posted
  • Location: Live in NW Kent by the Thames & work in SE London
  • Weather Preferences: Snowy November to March and Sunny and warm April to October
  • Location: Live in NW Kent by the Thames & work in SE London
5 minutes ago, TSNWK said:

Serious question but his with uppers of -1 in the south east

Fear not, its back for a second bite with -9c uppers flooding back in from the ENE- that's a huge difference in that timeframe

Screenshot_20210203-063900_Samsung Internet.jpg

Screenshot_20210203-063909_Samsung Internet.jpg

Edited by Kentspur
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Posted
  • Location: Delnies, Nairn, Highlands (30m asl)
  • Weather Preferences: Snow and ice
  • Location: Delnies, Nairn, Highlands (30m asl)
1 minute ago, Kentspur said:

Fear not, its back for a second bite with -9c uppers flooding back in from the ENE- that's a huge difference in that timeframe

Screenshot_20210203-063900_Samsung Internet.jpg

Screenshot_20210203-063909_Samsung Internet.jpg

The 144 chart is an absolute beaut for us in the south east

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Posted
  • Location: Aberporth S W Wales
  • Location: Aberporth S W Wales
10 minutes ago, Battleground Snow said:

No you are incorrect, the wind is coming in due east, it will be all snow even on the beaches

Perhaps you could back this up then with a chart?. ...I can't post image but snow depth chart shows 0.04 to 0.2 inches for the south at that time...hardly buried! 

Edited by KTtom
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Posted
  • Location: Aberporth S W Wales
  • Location: Aberporth S W Wales
1 minute ago, Battleground Snow said:

Frustratingly the wxcharts are not updating.

It does improve after the low passes tho..

 

image.thumb.png.9b2f4e58e49ec7a60e72cb55cad308cc.png

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