The Weather Outlook

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Quantum
19 January 2026 11:42:47
So things continue to firm up. Insofar as when the cold will likely arrive.

Thursday: Shetland

Friday: Maybe Orkney, possibly far North of Scotland

Saturday: Maybe Scotland, possibly far north of England, possibly NI

Sunday: The rest of Northern England, NI, possibly parts of Wales and the midlands 

Monday: The rest of Midlands/Wales, most of Southern England but possibly not the far SE or the far SW

Tuesday: Far SE and far SW


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

warrenb
19 January 2026 11:52:54
Well what was at day 7, 5 days ago is still at day 7 now. Seeing will be believing with this one.
Rob K
19 January 2026 11:54:46

Cold over Scandinavia is intense on the 06z!

Originally Posted by: squish 

It's tantalisingly close but never really makes inroads, at least for the south, before the block sinks.

Still, it does look as if there should be no shortage of cold air to the east if the Atlantic train weakens at all. Sadly in recent days the trend has been to chuck more coal in the boiler, just when we want it to go quiet!


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

Ally Pally Snowman
19 January 2026 12:08:38
The 6z AIFS is better,  easterly puts up more of a fight . Snow parameters look borderline here but it's v close. 
Bishop's Stortford 85m ASL.
warrenb
19 January 2026 12:10:05
I am going with a Ketley high, Shetland getting smashed and the rest of us just cold a gloomy.
lanky
19 January 2026 12:39:34

Well what was at day 7, 5 days ago is still at day 7 now. Seeing will be believing with this one.

Originally Posted by: warrenb 

Yes I keep getting this image in my mind regarding the forthcoming easterly

UserPostedImage


Martin

Richmond, Surrey

Rob K
19 January 2026 12:45:20
6Z GEFS graph is interesting - a definite two-way split forming with a cold cluster (including the op) and a mild one (including the control). Not much support for any prolonged cold (in London) though.
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

Jiries
19 January 2026 12:45:49
Most of the members now below the red average line and the white mean now -5C to -6c need to pull down to -12C minimum required  to avoid LESS COLD day temperatures sooner than later the mean need to drop as they did last cold spell that they lowered down to -10.5c.

Hope 12z and onward runs to lower the mean now, no time to play games stupid models ok? 

fairweather
19 January 2026 13:35:52
I monitor the ensembles closely. Always from a London standpoint. I have said the mean has been drifting up for a few days now. It is never a very well received observation and it often seems to be followed by a series of posts with individual cold runs from a variety of different models. But the ensembles including the AI ones have all been showing this. But as I have said on each occasion the mean is not particularly the b all and end all although better than cherry picked individual cold runs. The biggest stumbling block is the high level of uncertainty from January 26th which is just a week away now. Until that is resolved there are still equal chances (approx) of mild, average or cold outcomes although I must admit extreme cold is looking a bit less likely than that now. Nobody can say at this stage, other than of course the law of sod and we know what it thinks.
S.Essex, 42m ASL
CField
19 January 2026 13:39:37

Well what was at day 7, 5 days ago is still at day 7 now. Seeing will be believing with this one.

Originally Posted by: warrenb 

Think possibly 3 days to be truely safe....but the fact we have had an easterly already is in our favour I feel


Favourite snowstorm

Famous channel low

Dec 31st 1978

Hastings East Sussex

Foot of level snow severe drifting

Next day max temp -4 degrees Celsius

squish
19 January 2026 13:52:28
On the 'lesser' models, today's NASA and CMA were excellent runs as was KMA for the most part ( more active like the GEM towards the end).

I see plenty of positives from the latest output. Set against some of the 'stella' op runs I can understand why there is a degree of disappointment, but the general set up is as exciting as it has been in a long time. ( and I'm speaking from a part of the country that will most likely just be wet...although ironically with a small shift in the pattern could see the most snowfall)


D.E.W on Dartmoor. 300m asl
January2010
19 January 2026 14:18:50
Intense upper air cold over Scandinavia on the GFS 6z, however even with pulling in an Easterly for a few days next week, it is watered down to about -8 uppers by time it arrives here, which would be less cold than the Northerly we had in early Jan.

As it looks at the moment I don't think this cold spell is going to be worth the hype as I think on balance we are looking at a few days of 3c max temps and drizzle. Of course time for upgrades still but if this setup in late Jan can't deliver old school cold - ice days and non-marginal snow to lower areas then I'm not sure anything will now.

DPower
19 January 2026 15:01:23
I really do not understand the despondency regarding what may very well be a very cold and wintry spell of weather starting in 6 to 7 days time that could last for several days at least. The models have been struggling which is quite understandable when west meets east but It looks to me anyway that the path forward is becoming clearer and will continue to do so over the coming days.

looking forward to a great afternoon and evening model watching.

Lumi
19 January 2026 15:30:26

I am going with a Ketley high, Shetland getting smashed and the rest of us just cold a gloomy.

Originally Posted by: warrenb 

This may be a good shout considering latest Met Office updates (with good reasoning) I think it may be a bit better than that for the majority of cold fans. Waiting in anticipation for 12z and beyond. 


Thurlstone

South Yorkshire

230m AMSL

Saint Snow
19 January 2026 15:47:21

I really do not understand the despondency regarding what may very well be a very cold and wintry spell of weather starting in 6 to 7 days time that could last for several days at least

Originally Posted by: DPower 

Because it looked, for a tantalising few days, that the fabled 'true deep winter easterly' was a distinct possibility.

And now it looks less likely.

What many in the SE/S want isn't that good for MBY, so I'm not that fussed.

The 0z GFS was actually a peach for the majority of the UK, with a lot of snow (albeit more marginal the further south). Here's the GFS snowdepth chart for the 0z at t+252

UserPostedImage

And it got even better by t+384

The 6z for me was a big downgrade. Here's the t+252:

UserPostedImage

And by t+384 the only areas in E&W with snow are the mountains of Snowdonia, the Lakes and NYM.

As others have noted, there's been some great analysis.

But also some poor interpretations, a fair bit of bed-wetting, and a hell of a lot of IMBYism (and, given the geographic split of active TWO'ists has become more and more skewed towards the SE, that can lead to a very false picture being painted for the rest of the country)


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

Matty H
19 January 2026 15:53:09

I really do not understand the despondency regarding what may very well be a very cold and wintry spell of weather starting in 6 to 7 days time that could last for several days at least. The models have been struggling which is quite understandable when west meets east but It looks to me anyway that the path forward is becoming clearer and will continue to do so over the coming days.

looking forward to a great afternoon and evening model watching.

Originally Posted by: DPower 

I think that sometimes posts can set the subliminal undertone of expectation in here. If you go all the way back to page 6 of this thread on the 13th Jan, Q is stating that the easterly looks a certainty now and that was the easy part, and he was talking about this setting in from the weekend just gone. Then this gets pushed back and pushed back as so often happens, and then the frustration sets in (for some). 


Yate, Nr Bristol

TBFTEIARBSC

GroundhogDay
19 January 2026 16:25:14
https://www.theweatheroutlook.com/charts/gfs/12_186_mslp500.png 

West Vs East... Let battle commence! 


Based in the snow desert that is North Northants
Quantum
19 January 2026 16:50:20
Minor adjustments on the 12Z, nothing major has changed though. We are still looking at most northern areas seeing the cold by Sunday and most other parts by Monday. It could be a little earlier or later but I don't think the Saturday-Monday timescale is going to change at this point.

Despite this being so far away I can already see that snow shower potential is probably a bit more widespread thanks to Easterly winds rather than North westerly winds. 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

David M Porter
19 January 2026 16:50:42
GFS 12z op run looks reasonable to me thus far, from the point of view of cold seekers. 
Lenzie, Glasgow

"A body of men holding themselves accountable to nobody ought not to be trusted by anybody." – Thomas Paine

jhall
19 January 2026 16:52:54
Well the 12Z GFS Op run is looking a lot better. Now fingers crossed for the GEFS and the ECM.
Cranleigh, Surrey
Crepuscular Ray
19 January 2026 16:55:43
GFS 12Z Looks amazing for Edinburgh with cold ENE winds setting in on Saturday and lasting for at least 8 days until 1st Feb. We would get plenty of snow from that, as it stands surely?.....🤔
Jerry

Edinburgh, in the frost hollow below Blackford Hill

Ally Pally Snowman
19 January 2026 16:56:11
GFS 12Z snowfest,  GEM 12z rainfest . Where's your money?
Bishop's Stortford 85m ASL.
Quantum
19 January 2026 16:59:49

GFS 12Z snowfest,  GEM 12z rainfest . Where's your money?

Originally Posted by: Ally Pally Snowman 

The GEM solution is still unfortunately possible, we've seen this kind of thing brick a cold spell at 96h before. I don't think its the likely outcome though. If anything I expect the lows will be further south when the time comes.


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Quantum
19 January 2026 17:02:04
MJO proving its worth when it comes to predicting cold spells on multi-week timescales. Got the timing of this cold spell pretty much bang on. 
25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

squish
19 January 2026 17:08:58
At a quick glance I would say a general upgrade on the 12z's compared to the 00z's . UKMO looks good as far as it goes. Same general pattern but a tad further SW overall.


D.E.W on Dartmoor. 300m asl

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