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moomin75
25 November 2022 12:56:47


 


 


 


Looks like the longest run of below average 850s this year!


 


 


 



 


 


 


 


 


 


 


Originally Posted by: Ally Pally Snowman 

Yes indeed, even I am raising half an eyebrow.


My feet remain firmly grounded though, as we know if anything can wrong, it usually will. But on face value, looking promising.


Witney, Oxfordshire
100m ASL
Ally Pally Snowman
25 November 2022 12:59:32


Yes indeed, even I am raising half an eyebrow.


My feet remain firmly grounded though, as we know if anything can wrong, it usually will. But on face value, looking promising.


Originally Posted by: moomin75 


Yes at least its something to talk about.  Could easily go Pete Tong yet though.  Both Met and BBC monthlies are fairly underwhelming. 


Bishop's Stortford 85m ASL.
idj20
25 November 2022 13:36:44

Like I said before, anything to keep the angry Atlantic at arms length for as long as possible will do me just fine. 


Folkestone Harbour. 
Gandalf The White
25 November 2022 14:07:10

I don't see how we will get a significant cold spell this Winter as it would go against all the long range models, analogues, SSTs etc. that are all pointing towards an extremely mild Winter. Therefore I would be absolutely shocked if some of these models verified showing scandi blocks and cold Easterlies.

Originally Posted by: Taylor1740 


I understood that there was support for colder weather at the beginning of the winter, based on the La Niña pattern?


Anyway, we’re still a week or more away from the pattern change and as the ensemble options show, there are many ways the set-up could evolve differently even if the basic long wave pattern is favourable for colder weather.


The usual caveats apply: cross-model support, run-to-run stability,  and the Met Office including colder weather and wintry precipitation in its output.


For once I’m not hoping for an Arctic spell, given energy prices and generating capacity constraints.


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


Saint Snow
25 November 2022 16:00:31


Like I said before, anything to keep the angry Atlantic at arms length for as long as possible will do me just fine. 


Originally Posted by: idj20 


 


Western parts of the UK set for a battering from strong winds tomorrow.


Warnings for rain in the SW, but nothing for storm force winds.



Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
nsrobins
25 November 2022 16:07:57


 


 


Western parts of the UK set for a battering from strong winds tomorrow.


Warnings for rain in the SW, but nothing for storm force winds.


Originally Posted by: Saint Snow 


Now don’t go spoiling the atmosphere by talking about actual weather 😂


ICON continues the theme of easterly influence (which is what you call an easterly drift with as yet no real bite).


Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
Chunky Pea
25 November 2022 16:19:15


 


I understood that there was support for colder weather at the beginning of the winter, based on the La Niña pattern?


Originally Posted by: Gandalf The White 


La Nina winters, if anything, tend slightly towards milder conditions in the winter (in this part of the world) but all just statistical noise really. 


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
Whether Idle
25 November 2022 16:33:14


Like I said before, anything to keep the angry Atlantic at arms length for as long as possible will do me just fine. 


Originally Posted by: idj20 


Ian, be careful what you wish for...


Dover, 5m asl. Half a mile from the south coast.
ballamar
25 November 2022 16:48:06
GFS op run starts to create it own cold pool over the continent/SE to show what can happen in this set-up.
The Beast from the East
25 November 2022 16:57:36

Control looks nice so far



"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
nsrobins
25 November 2022 17:17:09

GFS op run starts to create it own cold pool over the continent/SE to show what can happen in this set-up.

Originally Posted by: ballamar 


And goes on to be super primed with eastern promise.


I can’t see any reason not to continue to think we are seeing a slow creep into a very interesting early winter period.


Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
Rob K
25 November 2022 17:24:42
GFS 12Z op run looks primed for significant snow at the end of the run with a low about to run into some pretty cold air from Europe. GFSP is slightly less exciting but still rather cold.
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
Bertwhistle
25 November 2022 17:40:54

GFS picked up on the heatwave that couldn't happen, and persisted with the extremity of it, if not the exact timing; it had a feel signal.


Now I'm not suggesting we should shift from scientific evidence to 'feel', but I hope you know what I mean in terms of not writing off unlikely scenarios- when the 'impossible' came through.


Bertie, Itchen Valley.
Retire while you can still press the 'retire now' button.
ballamar
25 November 2022 18:06:17


GFS picked up on the heatwave that couldn't happen, and persisted with the extremity of it, if not the exact timing; it had a feel signal.


Now I'm not suggesting we should shift from scientific evidence to 'feel', but I hope you know what I mean in terms of not writing off unlikely scenarios- when the 'impossible' came through.


Originally Posted by: Bertwhistle 


the difference is the heatwave was built on probability due to the massive heat pool that was extreme. This time we start from scratch but the signs are there and cold pools can develop very quickly during static pools of air and minimal solar heating

Sasa
  • Sasa
  • Advanced Member
25 November 2022 18:29:50
One thing i will say is that GFS has been remarkably consistent in terms of hinting of an Easterly for December and I think there is quite amount of cross model agreement although its still out in far away land in forecasting terms. I think somehting good is the offing. Afterall Putin said so.

Kingston Upon Thames
ballamar
25 November 2022 18:47:54
ECM looks like how I would draw an early December chart for cold
Zubzero
25 November 2022 18:54:02

ECM looks like how I would draw an early December chart for cold

Originally Posted by: ballamar 


2010 is in another league when it comes to early winter cold set up 


https://www.meteociel.fr/modeles/archives/archives.php?day=4&month=12&year=2010&hour=0&type=ncep&map=1&type=ncep&region=&mode=0


 

ballamar
25 November 2022 19:08:38


 


2010 is in another league when it comes to early winter cold set up 


https://www.meteociel.fr/modeles/archives/archives.php?day=4&month=12&year=2010&hour=0&type=ncep&map=1&type=ncep&region=&mode=0


 


Originally Posted by: Zubzero 


depends where you lived bar 1 big snowfall wasn’t remarkable in the SE

Rob K
25 November 2022 20:07:13


 


depends where you lived bar 1 big snowfall wasn’t remarkable in the SE


Originally Posted by: ballamar 


Agree, Dec 2010 was cold but largely snowless down here. January 2010 on the other hand…


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
Zubzero
25 November 2022 20:24:43


 


depends where you lived bar 1 big snowfall wasn’t remarkable in the SE


Originally Posted by: ballamar 


You said cold not snow? Plus the ECM is useless for snow wherever you are in the UK

Chunky Pea
25 November 2022 20:54:39


 


You said cold not snow? Plus the ECM is useless for snow wherever you are in the UK


Originally Posted by: Zubzero 


ICON is the best for forecasting snow and the areas it is likely fall, I find. 


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
Tom Oxon
25 November 2022 21:04:36
The ECM is as good as it gets for early Dec, the importance is the height rises in the GIN allowing stability of the block and reduces the chances of the it getting toppled by the Jet.

https://wetterzentrale.de/maps/ECMOPEU12_240_1.png 

Another week of those synoptics and it would be very frigid indeed as the air is drawn from the east, with the high SSTs in the North Sea too plenty of opportunity for lake effect. The Atlantic is just dead in the T240, with a textbook split PV. I've not checked the strat forecast, any sign of SSW?
S Warwickshire countryside, c.375ft asl.
Brian Gaze
25 November 2022 21:08:17


 


Agree, Dec 2010 was cold but largely snowless down here. January 2010 on the other hand…


Originally Posted by: Rob K 


Agree. Dec 2010 was almost a non event here as I've said before. Very different to mid December 2009 to mid January 2010 when there were 3 heavy falls of snow.


Brian Gaze
Berkhamsted
TWO Buzz - get the latest news and views 
"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan
Zubzero
25 November 2022 21:09:32


 


ICON is the best for forecasting snow and the areas it is likely fall, I find. 


Originally Posted by: Chunky Pea 


In the short term its decent, but any snow risk is 7 day + atm. 


We're so lucky these days to have access to so many models, I find it best to view all of them and go with the mean and your own judgement they can all be hit and miss in tearms of snowfall even @ -24 hours. 

Brian Gaze
25 November 2022 21:11:43

Big spread on MOGREPS.



 


Also interesting to see the GEFS 2m temp data tables looking a little less cold than some of the recent updates despite the apparent trend towards lower 850s.  


https://www.theweatheroutlook.com/premium/gefs-tables.aspx?run=12&fv=tmp2max&loc=london&lat=51.5&lon=0&p=&cty=


 


Brian Gaze
Berkhamsted
TWO Buzz - get the latest news and views 
"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

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