The Weather Outlook

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Gandalf The White
12 November 2025 13:34:59

Yep, it all looks like the standard fare for the time of year. 

Originally Posted by: Chunky Pea 

But not if you look at the ECM plot, which shows a marked slowing of the zonal winds later this month, way below the 90th percentile:

https://charts.ecmwf.int/products/extended-zonal-mean-zonal-wind?area=nh&base_time=202511110000 


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



Saint Snow
12 November 2025 15:03:21
FI looks horrible on all of GFS/ECM/AIFS - after a brief chilly snap, cyclogenesis WSW of Greenland creates a low that ploughs its way through the northerly blocking, heralding a sharp return of depressingly mild temps.

What was noticeable about the Nov/Dec 2010 cold spell was that the Azores High went on a meandering vacation, so the High Latitude Blocking was able to easily deflect the Jet and Atlantic lows on a much more southerly track.


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

White Meadows
12 November 2025 15:58:45
Models all over the place until this low barrels through. After which point we could be looking at an extended cold spell later in November. 

Strat reversal looking like a distinct possibility. 

doctormog
12 November 2025 18:33:24
It still looks like a chilly period coming up, a bit below average for the time of the year. It will feel notably colder than the mild weather we have had for much of the month so far.

Before then in the south it will be mild for a day or so and then a spell of wet weather. 

Up here, cool and showery from tomorrow.


Gandalf The White
12 November 2025 19:13:56

It still looks like a chilly period coming up, a bit below average for the time of the year. It will feel notably colder than the mild weather we have had for much of the month so far.

Before then in the south it will be mild for a day or so and then a spell of wet weather. 

Up here, cool and showery from tomorrow.

Originally Posted by: doctormog 

I just watched the 10-day forecast on the Met Office YouTube channel.  The middle of next week showed a 20-40% chance of snow even for the southern third, and higher as you go north.  Essentially a cold northerly flow establishes across the whole country by Monday and then there’s the prospect of a disturbance moving south mid-week.  It’s going to be a bit of a shock to the system to go from 4-5c above to several degrees below average.

In the short term Friday looks wet to very wet. Still understandable lack of certainty about the exact areas at greatest risk.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



fairweather
12 November 2025 21:46:04
Looks like even here might get stuck under some serious rain Fri/Sat. Looking at the two occluded fronts on the fax that stall. Generally, our most persistent rain(and snow) come from that S/S.E track. Can we get 20mm in a day?
S.Essex, 42m ASL
Gandalf The White
12 November 2025 22:06:22

Looks like even here might get stuck under some serious rain Fri/Sat. Looking at the two occluded fronts on the fax that stall. Generally, our most persistent rain(and snow) come from that S/S.E track. Can we get 20mm in a day?

Originally Posted by: fairweather 

The 12z ECM has three times that for our zone! 😮

https://www.meteociel.fr/modeles/ecmwf_hres.php?ech=360&mode=25&carte=6 


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



tallyho_83
12 November 2025 22:19:01
looking at the latest Zonal winds at 10hpa on the ECMWF model - ,many going down to neutral now:

https://charts.ecmwf.int/streaming/20251112-2000/3b/ps2png-worker-commands-59875776cc-55qg6-6fe5cac1a363ec1525f54343b6cc9fd8-exmbel68.png 


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)

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Sean Moon

Magical Moon

www.magical-moon.com

The Beast from the East
13 November 2025 10:29:19
no comments says it all.  just a bog standard 3 day toppler.  if its cloudy we might not even get a frost down here!

Perhaps this is the front loaded winter that was promised.  My roses are budding again. Never seen that before in November.  Lots of insects still around too. 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Saint Snow
13 November 2025 10:53:11
High pressure over the Arctic Ocean has been shown on repeated runs as stubbornly holding out. But it's under huge attack from lows. Latest output shows it increasingly losing the battle.


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

Saint Snow
13 November 2025 11:12:11

no comments says it all.  just a bog standard 3 day toppler.  if its cloudy we might not even get a frost down here!

Perhaps this is the front loaded winter that was promised.  My roses are budding again. Never seen that before in November.  Lots of insects still around too. 

Originally Posted by: The Beast from the East 

It's mid-November, Geoff!

Given the synoptics (cold flow from the north), any chilliness was always going to be least impactful in the south.

FWIW, MBY (not that much further north, relatively speaking) gets 5 days of 5-7c maxes and 1-3c mins, and a forecast of sleet, perhaps wet snow at times, Wed/Thur. As you say, nothing to write home about in itself, but it's just nice to get something different to winds from a westerly quadrant and regular rain.

Pitlochry is a different story; 14 days of maxes 3-7c and mins down to -3. Three days of predominantly snow (albeit light and probably wet). Even Lanark (south of Glasgow) gets 14 days of temps maxing 4-7c and mins down to -1, with snow falling for much of next Thursday)

Obviously these are forecasts based on models - but so, I guess, is your dismissive post.

Hopefully it's just a hors d'oeuvre before more proper wintry weather as we move through December. I note the 6z GFS is keen to bring back the theme of high pressure ridging to the north over/to the west of the UK in FI. Hopefully a trendsetter.


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

tallyho_83
13 November 2025 12:44:19
Zonal winds are far weaker than average and compared to this time last year a lot weaker it is fair to say:

http://www.weatheriscool.com/media/u10serie_link_img.png 


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)

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Sean Moon

Magical Moon

www.magical-moon.com

Brian Gaze
13 November 2025 16:01:02
This is last year's effort.

UserPostedImage


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

Retron
13 November 2025 16:37:06

looking at the latest Zonal winds at 10hpa on the ECMWF model - ,many going down to neutral now:

https://charts.ecmwf.int/streaming/20251112-2000/3b/ps2png-worker-commands-59875776cc-55qg6-6fe5cac1a363ec1525f54343b6cc9fd8-exmbel68.png 

Originally Posted by: tallyho_83 

Yes, as I mentioned several days ago it's shaping up to be quite an interesting event, as even though it rebounds quickly it still takes a long time to get back to average. Such a prolonged weakening should in theory be of cheer to cold weather fans.

The longer-range ECM T2M charts for next week continue to show a cold week across the UK, but the average spell in December has now all but disappeared, with pinks returning. 


Leysdown, north Kent
The Beast from the East
13 November 2025 16:51:16

Hopefully it's just a hors d'oeuvre before more proper wintry weather as we move through December.

Originally Posted by: Saint Snow 

"It's the Hope that kills you" 

Never gonna happen mate, you know it, we all know it!  At least looks like staying relatively dry down here once it topples. 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

doctormog
13 November 2025 17:09:10
So to translate the above few posts, the outlook is cooler than recently (not difficult) but also cooler than average for the time of the year (here already and further south after tomorrow). 

It feels notably colder here already in the wind and those colder conditions look set to hang around for at least a week or so. What happens beyond then is still uncertain. For context it is important to note that colder than average weather in November is colder than average for late autumn and does not mean widespread wintry weather. It is not yet winter.

The stratospheric warming is interesting (for the reason Darren mentions) and it will also be interesting to see any impact it has on synoptics down the line.


Chunky Pea
13 November 2025 18:12:49

This is last year's effort.

UserPostedImage

Originally Posted by: Brian Gaze 

Had a covering on that morning, which is not something I am expecting to see from the current forecast charts, at least for my tiny grid point. 

UserPostedImage


Patrick,

East Galway, Ireland.

Brian Gaze
13 November 2025 18:19:14

Had a covering on that morning, which is not something I am expecting to see from the current forecast charts, at least for my tiny grid point. 

UserPostedImage

Originally Posted by: Chunky Pea 

We also had a covering from it. TBH, I'll be disappointed if I don't see falling snow in my locality in the next 10 days. 


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

doctormog
13 November 2025 18:28:33
We had about 3” of snow here and 5 days of cover from that event last November but I’m not really expecting anything here this time. Perhaps a few wintry flurries, but it will feel cold.

To be fair it’s quite an impressive setup for the time of year. Here’s the 12z ECM so far at time of writing: 

https://www.wetterzentrale.de/en/topkarten.php?map=2&model=ecm&var=1&time=120&run=12&lid=OP&h=0&mv=0&tr=24 


BJBlake
14 November 2025 00:36:46

We also had a covering from it. TBH, I'll be disappointed if I don't see falling snow in my locality in the next 10 days. 

Originally Posted by: Brian Gaze 

The GFS, which has been caused of overcooking wintry precipitation is currently showing a period of both falling and lying snow for the east at the end f next week, and I guess the settling of anything wintry may be determined if it falls either by day or by night. There have been many November days in memory bank when I awoke to see snow all about on roofs and grass, but dripping rapidly by 9.00am, as the sun rises. Those marginal overnight snow events that dont last used to be standard fare for November’s past, so a re-run - in these warmed times, will be a welcome trip down Nostalgia street.


Brecklands, South Norfolk 28m ASL
tallyho_83
14 November 2025 01:49:41

Zonal winds are far weaker than average and compared to this time last year a lot weaker it is fair to say:

http://www.weatheriscool.com/media/u10serie_link_img.png 

Originally Posted by: tallyho_83 

Mean ECMWF zonal flow @ 10hpa now gone neutral and a few going into reverse although very slightly which could signal colder weather to come!?

https://charts.ecmwf.int/streaming/20251113-2000/87/ps2png-worker-commands-59875776cc-bfq4t-6fe5cac1a363ec1525f54343b6cc9fd8-u9lum2f3.png 


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)

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Sean Moon

Magical Moon

www.magical-moon.com

Retron
14 November 2025 03:55:27

Mean ECMWF zonal flow @ 10hpa now gone neutral and a few going into reverse although very slightly which could signal colder weather to come!?

Originally Posted by: tallyho_83 

The mean goes negative, slightly, which would be unprecedented in the satellite era (1979 onwards) for November - it last happened in the late 60s AFAIK, but that's through educated looks at reconstructed charts rather than actual measurements. 

In theory that should deliver quite a punch to the developing polar vortex, and I would expect at the very least a reduction in the normal zonal westerlies for quite a while afterwards. The trend has been to increase winds back to nearer normal by the end of the year and that remains today - which would imply a milder end to the winter.

However, with sod's law in place, I wouldn't be at all surprised if it ended up as another "record cold and snowy" spell for North America - it would be refreshing if, just once, any cold effects were felt on the Eurasian side of the globe instead. 

The 45-day ECM charts continue to show a remarkably cold week next week, followed by a swift rebound to just above normal conditions - our norm these days. Encouragingly for cold fans, though, the December average spell is back on again, with a small bit of blue appearing for the first time in the week before Christmas - a very encouraging trend, and I'd put money on it being due to that reversal being shown for the end of November - although it could be coincidence that the temperature forecast has trended colder as an SSW is now forecast.

https://charts.ecmwf.int/products/extended-anomaly-2t?base_time=202511130000&projection=opencharts_europe&valid_time=202512220000 


Leysdown, north Kent
Heavy Weather 2013
14 November 2025 06:17:21
I have to say I am pleased with the 0z GFS. It shows next week cold plunge well, and then the expected rebound. However, similar to the 18z we see another round of cold air digging in. Going to be another interesting few days of model watching. 
Mark

Beckton, E London

Less than 500m from the end of London City Airport runway.

Ally Pally Snowman
14 November 2025 06:38:34
Last couple of GFSs have had a snow event for here. 

https://www.wetterzentrale.de/en/topkarten.php?map=20&model=gfs&var=25&run=0&time=132&lid=OP&h=0&mv=0&tr=6#mapref 


Bishop's Stortford 85m ASL.
Rob K
14 November 2025 08:14:09
Gfs this morning suggesting two potential snow events even for southern and central areas, with the second shot delivering more widespread snow (although missing the southeast largely). Scotland looks very snowy for November. 
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

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