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Joe Bloggs
23 February 2018 16:18:05

A progressive run in terms of milder uppers this one.


http://www.wetterzentrale.de/maps/GFSOPEU12_162_2.png


 



Manchester City Centre, 31m ASL

kmoorman
23 February 2018 16:19:01


Interesting 850 temp profile.



Originally Posted by: Brian Gaze 


 


Blizzard?


Home: Durrington, Worthing, West Sussex. (16 ASL)
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Brian Gaze
23 February 2018 16:20:30

From bitterly cold to bitterly disappointing in the space of 12 hours. 



Brian Gaze
Berkhamsted
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kmoorman
23 February 2018 16:20:31


A progressive run in terms of milder uppers this one.


http://www.wetterzentrale.de/maps/GFSOPEU12_162_2.png


 


Originally Posted by: Joe Bloggs 


 


It would be nice to get a GFS Op run that doesn't risk rain in the south, but I guess we have to walk the tightrope to get the best snow!


Home: Durrington, Worthing, West Sussex. (16 ASL)
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SJV
23 February 2018 16:20:52


A progressive run in terms of milder uppers this one.


http://www.wetterzentrale.de/maps/GFSOPEU12_162_2.png


 


Originally Posted by: Joe Bloggs 


Yes and it brings a very messy/snowy climax for the southern half during Friday - turning back to rain in the SE.


I'd rather it be a little further south than that just to keep the cold locked in longer. Hopefully just GFS' progressive tendencies coming to the fore again. Surely it can't be that easy for the low to displace the cold?

Ally Pally Snowman
23 February 2018 16:22:48

All model OPs as good as it gets upto 168 but recurring theme GFS and by the looks ukmo want to introduce warmer air from the south after day 7. GEM  and ECM want carry on the deep cold .


Bishop's Stortford 85m ASL.
backtobasics
23 February 2018 16:26:20


From bitterly cold to bitterly disappointing in the space of 12 hours. 



Originally Posted by: Brian Gaze 


so many options out there, the cold spell would go with a bang if it panned out that way, a few will be glad to see the back of it by then !!

Rob K
23 February 2018 16:28:07


From bitterly cold to bitterly disappointing in the space of 12 hours. 



Originally Posted by: Brian Gaze 


Only temporarily, the uppers are only above zero for a very brief period. 


 


UKMO is a bit concerning with the high running away to the west. 


Yateley, NE Hampshire, 73m asl
"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." — Jerome K. Jerome
SEMerc
23 February 2018 16:28:14

Looks like rain spreading up the eastern side of the UK by T+ 174.

Solar Cycles
23 February 2018 16:28:27


From bitterly cold to bitterly disappointing in the space of 12 hours. 



Originally Posted by: Brian Gaze 

Looks good for me. 😎

Ally Pally Snowman
23 February 2018 16:28:37

Looks like GEM stays snowy all the way to day 10 though the cold pool has pretty much gone by then.


 


Bishop's Stortford 85m ASL.
backtobasics
23 February 2018 16:29:17


 


Yes and it brings a very messy/snowy climax for the southern half during Friday - turning back to rain in the SE.


I'd rather it be a little further south than that just to keep the cold locked in longer. Hopefully just GFS' progressive tendencies coming to the fore again. Surely it can't be that easy for the low to displace the cold?


Originally Posted by: SJV 


my own suspicion is that we will certainly see that watered down, the old 'blended solution' chestnut.  We know GFS tends to go a bit OTT with LP development.  Interesting to see what the UKMO and ECM make of this feature tonight.  Almost certainly it will be less developed and therefore further south than on this one GFS OP run.  


It would from my own pov be good to get a nice blizzard and have the cold hang on for a day or two so we can enjoy the result.  Then bring on spring please.

Stormchaser
23 February 2018 16:29:23

Er, very cold air wrapping into a LP sat over the UK like that is not how cold spells end, merely move onto a new, snow-dominated phase... not that I find so much northward movement away from the southerly jet very believable! Not ruling it out though as there's an upper low crossing the UK within the E flow and if that stays far enough N then yes, the low could be drawn toward it.


Hard luck for the SE corner on that run but hey, it's just one outcome of countless many!


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Solar Cycles
23 February 2018 16:30:39


 


I think you are underplaying the snow risks for the west.


For Manchester I'd suggest a 70-80% risk of us catching at least a few snow flurries, maybe 40% risk of lying snow of more than an inch. The very small chance of a significant fall of 5 inches or more.


This pressure profile suggests a high likelihood of snow reaching this far west by Tuesday night. http://www.wetterzentrale.de/maps/GFSOPEU12_111_1.png


 


Originally Posted by: Joe Bloggs 

Experience tells me otherwise Joe, without any embedded troughs or an attack from the SW any precipitation simply won’t make it across the Pennines.

Rob K
23 February 2018 16:31:41
The mild air gets mixed out very quickly and we are back down to -5C for most of the country with snow.

Any thought on the UKMO? The high just does a runner from 120 to 144 and it all goes a bit ICONesque.
Yateley, NE Hampshire, 73m asl
"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." — Jerome K. Jerome
Joe Bloggs
23 February 2018 16:33:18


Experience tells me otherwise Joe, without any embedded troughs or an attack from the SW any precipitation simply won’t make it across the Pennines.


Originally Posted by: Solar Cycles 


Well in Feb 2005 we got numerous showers, also in Feb 91 and Dec 96 we received decent coverings. 


Maybe south of the region is more favoured than your patch? 


I think there's some reverse psychology going on with your posts. 



Manchester City Centre, 31m ASL

Joe Bloggs
23 February 2018 16:35:56

Incredible output yet again to be frank.


MetO is amazing. 


T+120 https://www.meteociel.com/modeles/ukmo2.php?nh=0&ech=120&carte=1007 


T+144 https://www.meteociel.com/modeles/ukmo2.php?nh=0&ech=144&carte=1007


Brutally cold with a snow risk for many.



Manchester City Centre, 31m ASL

jhall
23 February 2018 16:37:09


 


When did we get that spell when temperatures got down into he minus 20s in England - that's what this reminds me of.


Originally Posted by: Dingle Rob 


Unless there's been a more recent instance that I've forgotten, the last time there was a -20 minimum recorded somewhere in England was in January, 1982.


Cranleigh, Surrey
NickR
23 February 2018 16:37:47
Models are now consistently giving the NE over half a metre of snow by the end of the week. Could be some serious impacts here if that comes off.
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Durham
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Ally Pally Snowman
23 February 2018 16:38:27

The mild air gets mixed out very quickly and we are back down to -5C for most of the country with snow.

Any thought on the UKMO? The high just does a runner from 120 to 144 and it all goes a bit ICONesque.

Originally Posted by: Rob K 


 


Hope it does end up like ICON as its stunningly snowy end. It's very difficult to know what it would look like at 7 and 8 though.


We mustn't lose sight on just how good the output is at the moment its unbelievably stunning from all models upto day 7.


 


Bishop's Stortford 85m ASL.
Solar Cycles
23 February 2018 16:39:28


 


Well in Feb 2005 we got numerous showers, also in Feb 91 and Dec 96 we received decent coverings. 


Maybe south of the region is more favoured than your patch? 


I think there's some reverse psychology going on with your posts. 


Originally Posted by: Joe Bloggs 

Nothing in 2005 here but 91 was excellent.

Ally Pally Snowman
23 February 2018 16:40:23

Models are now consistently giving the NE over half a metre of snow by the end of the week. Could be some serious impacts here if that comes off.

Originally Posted by: NickR 


 


Yes you are pretty much in the sweet spot for snow there in the NE somewhere like Consett could get 100cm I reckon. 


Bishop's Stortford 85m ASL.
Joe Bloggs
23 February 2018 16:41:18


 


 


Hope it does end up like ICON as its stunningly snowy end. It's very difficult to know what it would look like at 7 and 8 though.


We mustn't lose sight on just how good the output is at the moment its unbelievably stunning from all models upto day 7.


 


Originally Posted by: Ally Pally Snowman 


Agreed. People may initially think GFS is disappointing at first glance - but it could create severe disruption for significant sections of the country. 


http://www.wetterzentrale.de/maps/GFSOPUK12_174_25.png 



Manchester City Centre, 31m ASL

Gavin D
23 February 2018 16:41:34

Deep gone by next weekend on GFS 12z away from Scotland


Chiltern Blizzard
23 February 2018 16:42:03


Looks good for me. 😎


Originally Posted by: Solar Cycles 


Indeed... ok, not so great for EA and SE but mid-western parts of England doesn’t get above 1c the whole time as the low mixes the air... Could be exceptionally snowy.


Rendlesham, Suffolk 20m asl

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