The Weather Outlook

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Matty H
29 October 2024 07:57:21

Recent winters have indeed seen their coldest spells early on. And this year will be no exception based on Exeter’s updated Contingency Planners 3 month outlook today:

https://www.metoffice.gov.uk/binaries/content/assets/metofficegovuk/pdf/business/public-sector/civil-contingency/3moutlook_ndj_v1.pdf 

Overall winter being cold just 5%!! 

Can’t remember seeing it that poor since its conception. Much higher chance of ‘normal’ (mild) or ‘mild’ (very mild). The only crumb of comfort for me is the absence of particularly windy or wet conditions overall. 

Originally Posted by: White Meadows 

That’s encouraging, although I’ve no idea what their success rate is like on these. Mixed I’d imagine at the range of time involved 


Yate, Nr Bristol

TBFTEIARBSC

marcus72
29 October 2024 08:10:19

This must be one of the biggest 16 day 850hPa temperature anomalies ever recorded in the UK. 

UserPostedImage

Originally Posted by: Brian Gaze 

Would love to see that graph flipped upside down in January!


Langstone, SE Hampshire
Ally Pally Snowman
29 October 2024 08:15:50
Annoyingly it is looking like a mostly cloudy high atm. Rock solid HP for the foreseeable though. Probably the longest HP dominated pattern for 2 years.
Bishop's Stortford 85m ASL.
AJ*
  • AJ*
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29 October 2024 08:34:50

...

GEFS - soon becoming very mild (5 or 6 C above norm) gradually declining but still above norm by a couple of degrees to 14th Nov. Unusually good ens agreement throughout. Chances of rain minimal, just showing in 1 or 2 runs after Thu 7th.

Originally Posted by: DEW 

The London 00z GEFS is probably the most prolonged dry outlook that I've seen in all my years of model-watching.


Angus; one of the Kent crew on TWO.

Tonbridge, 40m (131ft) asl

Brian Gaze
29 October 2024 08:40:33

Annoyingly it is looking like a mostly cloudy high atm. Rock solid HP for the foreseeable though. Probably the longest HP dominated pattern for 2 years.

Originally Posted by: Ally Pally Snowman 

Yes there are enough small rain spikes appearing to suggest there will be a lot of cloud in the mix. That also means overnight lows could  remain quite high. When I went running this morning it felt "warm". It looks like they will drop somewhat, but getting an inversion and low level cold is often elusive even when things look promising. 


Brian Gaze

Berkhamsted

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GezM
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29 October 2024 09:43:26

Yeah man, but it’s a dry heat!!

Originally Posted by: White Meadows 

Which is great news! 

If only it was July. Could have been a momentous heatwave. 


Living in St Albans, Herts (116m asl)

Working at Luton Airport, Beds (160m asl)

Matty H
29 October 2024 10:19:05

Which is great news! 

If only it was July. Could have been a momentous heatwave. 

Originally Posted by: GezM 

No doubt that’ll be when we pay for this dry spell 


Yate, Nr Bristol

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Sasa
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29 October 2024 10:40:41

Remarkable to see the ECM ENS probability charts showing the percentage chance of 5mm or more rain falling at t+13 days to be between 0% and 10% in much of the south and east. This could be a very boring spell of weather but if the models are correct it looks like a very notable one too.

UserPostedImage

Even in the north west of the UK the 850hPa temperature anomaly level and consistency is unusual.

UserPostedImage

Originally Posted by: Brian Gaze 

It’s definitely a worrying trend. I’ve booked Val d’Isère leading up to Christmas, and the snow line is sitting at over 3,000 meters at present In couple of nights time 0c at 4,000 meters!. I monitor snow conditions across the Alps every year, and I can’t recall it ever being this poor. There’s not even frost at night, with muddy trails mid-mountain preventing artificial snowmaking for forseable future. The high-pressure ridge seems stuck over Europe, and there's no sign of relief.

For once, it feels like we can predict the next two weeks with little hope for change. Hopefully, I’m wrong, and a weather shift is on the way.


Kingston Upon Thames
Retron
29 October 2024 10:52:56

It’s definitely a worrying trend.

Originally Posted by: Sasa 

I'm guessing you weren't online in the late 90s, early 2000s, when a whopping great high ended up over the Alps seemingly every winter. The Bartlett high, it was nicknamed (by those on weather forums/newsgroups), and there was a chap on here in the early days who kept going on about the pressure in Berne. Fun times!

It makes a change to see such a settled outlook, and I'm thoroughly enjoying it - makes a change from the usual zonality this time of year. I'm trying not to remind myself though of the old maxim, "be it dry or be it wet, nature always pays her debt". Instead, I'm hoping that the trend we've seen in recent years for patterns to repeat every 6 to 8 weeks kicks in - a long settled spell in winter is well overdue.

Incidentally this high isn't a cold one - yet. The moist Atlantic air is definitely making itself felt, and the dewpoint (14C here) is impressively high for this time of year. The MetO raw does, however, show a characteristic gradual drop in temperatures over the next week, a high of 17 today versus 11 in a week's time, reflecting the fact that the sun is now too weak to warm things up, and instead under stagnant conditions things just get colder and colder. There's a hell of a long way to go though compared to the old days: in the 80s and 90s it wasn't at all unusual to get an air frost for bonfire night, something which seldom happens these days.

It'll be interesting to see how long this can persist and whether, with time, we can pull some drier air in from the continent - that would be the catalyst for clear skies and frosts, but at the moment it looks unlikely.


Leysdown, north Kent
Sasa
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29 October 2024 11:10:41

I'm guessing you weren't online in the late 90s, early 2000s, when a whopping great high ended up over the Alps seemingly every winter. The Bartlett high, it was nicknamed (by those on weather forums/newsgroups), and there was a chap on here in the early days who kept going on about the pressure in Berne. Fun times!

It makes a change to see such a settled outlook, and I'm thoroughly enjoying it - makes a change from the usual zonality this time of year. I'm trying not to remind myself though of the old maxim, "be it dry or be it wet, nature always pays her debt". Instead, I'm hoping that the trend we've seen in recent years for patterns to repeat every 6 to 8 weeks kicks in - a long settled spell in winter is well overdue.

Incidentally this high isn't a cold one - yet. The moist Atlantic air is definitely making itself felt, and the dewpoint (14C here) is impressively high for this time of year. The MetO raw does, however, show a characteristic gradual drop in temperatures over the next week, a high of 17 today versus 11 in a week's time, reflecting the fact that the sun is now too weak to warm things up, and instead under stagnant conditions things just get colder and colder. There's a hell of a long way to go though compared to the old days: in the 80s and 90s it wasn't at all unusual to get an air frost for bonfire night, something which seldom happens these days.

It'll be interesting to see how long this can persist and whether, with time, we can pull some drier air in from the continent - that would be the catalyst for clear skies and frosts, but at the moment it looks unlikely.

Originally Posted by: Retron 

I remember the 90s too, though I wasn’t part of the forum then. I've been skiing since childhood and always made it a point to head to snow-sure resorts in the Alps—I just love seeing the snow on the ground. I even remember the old BBC ski forecasts in the 90s, and one year, the weatherman finally announced that the stubborn high-pressure system would shift, letting the weather fronts move in just in time for December ski openings.

What really concerns me now, though, is the freezing level sitting well above 3,000 meters. IF the models show a promising cold spell and snowfall in two weeks, we know how forecasts tend to shift five days before the event. But with this setup, I’m almost certain they’ll be spot-on, and I have a gut feeling this pattern might linger into end of Novand  early December.


Kingston Upon Thames
Brian Gaze
29 October 2024 11:41:29

I remember the 90s too, though I wasn’t part of the forum then. I've been skiing since childhood and always made it a point to head to snow-sure resorts in the Alps—I just love seeing the snow on the ground. I even remember the old BBC ski forecasts in the 90s, and one year, the weatherman finally announced that the stubborn high-pressure system would shift, letting the weather fronts move in just in time for December ski openings.

What really concerns me now, though, is the freezing level sitting well above 3,000 meters. IF the models show a promising cold spell and snowfall in two weeks, we know how forecasts tend to shift five days before the event. But with this setup, I’m almost certain they’ll be spot-on, and I have a gut feeling this pattern might linger into end of Novand  early December.

Originally Posted by: Sasa 

I pulled on a pair of skies for the first time since 2016 earlier this month. That said, we're not wedded to the idea of going back to the Alps this winter and I'm also concerned about the snow prospects. We usually (or used to) go to Courchevel 1650.


Brian Gaze

Berkhamsted

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29 October 2024 13:22:54

That’s encouraging, although I’ve no idea what their success rate is like on these. Mixed I’d imagine at the range of time involved 

Originally Posted by: Matty H 

Zero.

Years of back loaded, front loaded mid loaded garbage. Its a 3 month forecast which updates every few weeks , so makes the 3 month span useless.

As they have gone mild, I now expect some very cold spells.


Berkshire
Sasa
  • Sasa
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29 October 2024 13:37:52

I pulled on a pair of skies for the first time since 2016 earlier this month. That said, we're not wedded to the idea of going back to the Alps this winter and I'm also concerned about the snow prospects. We usually (or used to) go to Courchevel 1650.

Originally Posted by: Brian Gaze 

 We do ski drive with family every year sometimes twice year depending on kids exams etc. Val at 1850 and Cervinia at 2050. (both village level) are favourite. never had a problem but at present its mud time below 3,000m. Both resorts have glaciers but I really do not fency skiing unless there is plentiful snow at village level.

Persistent high-pressure systems over Europe at present notoriously stubborn, and once established, they often take time to shift. However, these patterns can break down as new weather systems move in from the Atlantic or Arctic, hopefully later November when jet stream patterns start to shift, hopefully increasing the chance of Atlantic low-pressure systems nudging the high-pressure ridge out of place. This could allow colder air to push southward and bring the snowfall to the Alps.

waiting game for now but very annoying how there is such good cross model agreement at present and I am bloody sure its nearly 90% accurate at such long range. had it been the other way round I would say chance 5% wintry weather would come true nearer the time.


Kingston Upon Thames
White Meadows
29 October 2024 18:04:55

Zero.

Years of back loaded, front loaded mid loaded garbage. Its a 3 month forecast which updates every few weeks , so makes the 3 month span useless.

As they have gone mild, I now expect some very cold spells.

Originally Posted by: The Dub Version 

Careful, you don’t to upset the Metpolice! On a serious note, they went for front loaded last winter IIRC, came close but missed the target as the cold spell came a few weeks later than expected. Might be better sticking with Moomin’s outlook this year. 

As for the Alps, early April 2022 and 2023 in the Grand Massif produced excellent conditions above 1800 for the week I was there on both occasions. Usually a risky game before March these days. 

Gandalf The White
29 October 2024 18:10:36

Zero.

Years of back loaded, front loaded mid loaded garbage. Its a 3 month forecast which updates every few weeks , so makes the 3 month span useless.

As they have gone mild, I now expect some very cold spells.

Originally Posted by: The Dub Version 

We’re heading into a La Niña and that favours colder winters in Western Europe, but it’s obviously only one factor.

As it is we seem to be destined to be content for now with wondering whether autumn will deliver an air frost in lowland England.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



White Meadows
29 October 2024 18:20:01
I just read that Mount Fuji is still without snow, making it the latest time in the year the mountain has remained bare since records began 130 years ago. If it’s a struggle there, perhaps we’re closer to the first snowless Alps season than we first imagined.

Bertwhistle
29 October 2024 18:35:52
Impressive thicknesses of 564+ into November with end October dam as high as 566 forecast by GFS op (remembering this is short term). 

850s in NE England around 14 with 564 thicknesses. Shame insolation won't have the earlier autumn impact- could be some 2014 31/10 type excitement.


Bertie, Itchen Valley.

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DEW
  • DEW
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30 October 2024 07:47:25
WX temps maintain the contrast between cold steadily spreading from the east into all of Russia in week 2 and mild weather off W Iberia and Biscay. Most of Europe including Britain stay generally above norm. A very dry area covering most of Europe including Britain in week 1 with rain in Spain, Russia and Scandinavia; the dry area slipping south in week 2 so Spain dries up and rain approaches the north of Scotland.

GFS Op - HP consistently close and controlling British weather for the next two weeks. If anything, weaker and centred on the near continent Tue 5th allowing the Atlantic with S-lies to approach W Britain but resuming and strengthening S Ireland from Sat 9th with NW-lies for the far NE.

ECM - drifts away from GFS later on; HP still present on Sat 9th but centred on the Baltic and even more intense at 1050mb, keeping the S-lies going

GEM - more like ECM but HP near Baltic is weaker and Atlantic troughs are threatening the W

GEFS - In the S, temps 4 or 5 C above norm to Sat 9th, then drifting lower with less ens agreement and small amounts of rain in a few ens members. In the N, mean temp follows the same trend but with less agreement from ensembles throughout esp in NE and small chance of rain in trivial amounts from Tue 5th (heavier in NW). 


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

Russwirral
30 October 2024 13:10:07
as much as we are in a dry spell, theres not much evaporation going on with it...

Went running this morning across some fields, and, well my shoes are in soapy water in the sink.  Was like a bog.

We havent had that much rain recently, but everything is wet and claggy.  It feels like January in terms of dampness.

Hopefully a little bit of a breeze and clear skies can help soon.


warrenb
30 October 2024 17:21:08
GFS 12z all the way up to 384 is high pressure. Has the azores high migrated ?
Retron
30 October 2024 17:30:31

as much as we are in a dry spell, theres not much evaporation going on with it...

Went running this morning across some fields, and, well my shoes are in soapy water in the sink.  Was like a bog.

We havent had that much rain recently, but everything is wet and claggy.  It feels like January in terms of dampness.

Hopefully a little bit of a breeze and clear skies can help soon.

Originally Posted by: Russwirral 

Yes, the ground is still soft here as well - albeit there's been some drizzly stuff each day apart from today.

To get things to dry out, wind or not, you'll want lower dewpoints - the dewpoint here, right now, is 12C, and that doesn't help!

The 12z GFS has a brief period of lower dewpoints on Monday, but only for a few hours as another surge of tropical maritime air moves across.


Leysdown, north Kent
Devonian
30 October 2024 17:30:55

GFS 12z all the way up to 384 is high pressure. Has the azores high migrated ?

Originally Posted by: warrenb 

No. But

Chunky Pea
30 October 2024 18:01:57
Ridiculously humid here as well. Oddly though, fog rarely touches down. Had a bit yesterday morning but that was it. Dank stillness the main theme of the models for another while it seems. 
Patrick,

East Galway, Ireland.

DEW
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31 October 2024 07:58:28
WX temps - progressive changes from week 1 (above norm in W Europe , cool for Russia, warm around coasts of Spain) to a situation in week 2 in which cold, even really cold, air is piling up over Russia and beginning to spill into E  Europe. Still warm for Mediterranean coasts but this warmth retreating from SW Britain and Biscay. Very dry for Europe in week 1 except the far north - the dry area shrinking E-wards in week 2 (more so than shown yesterday, just still affecting SE Britain) with rain appearing for Ireland and W Scotland as well as S France.

GFS Op - HP close to or over Britain to  Thu 14th ridging to the SE for most of the time, some close approaches to W Britain from Atlantic troughs around Tue 5th. Then the HP suddenly splits into two parts, one over W Russia, one over the Azores and by Sat 16th a large but shallow area of LP covers Britain.

ECM - similar to GFS but by Sun 10th HP has drifted S-wards to Biscay and Britain is under SW-lies.

GEM - like ECM

GEFS - mean temp staying well above norm (say 6C at max) to Sat 16th , good ens agreement to Sat 9th but quite wide divergence in the N later on; only a little rain and that scattered over only a few runs - after Tue 12th in the SE, after Thu 7th in the N & W. [Op run temp for Plymouth shows an improbable 14C above norm on the 14th!]


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

Sasa
  • Sasa
  • Advanced Member
31 October 2024 08:13:55

WX temps - progressive changes from week 1 (above norm in W Europe , cool for Russia, warm around coasts of Spain) to a situation in week 2 in which cold, even really cold, air is piling up over Russia and beginning to spill into E  Europe. Still warm for Mediterranean coasts but this warmth retreating from SW Britain and Biscay. Very dry for Europe in week 1 except the far north - the dry area shrinking E-wards in week 2 (more so than shown yesterday, just still affecting SE Britain) with rain appearing for Ireland and W Scotland as well as S France.

GFS Op - HP close to or over Britain to  Thu 14th ridging to the SE for most of the time, some close approaches to W Britain from Atlantic troughs around Tue 5th. Then the HP suddenly splits into two parts, one over W Russia, one over the Azores and by Sat 16th a large but shallow area of LP covers Britain.

ECM - similar to GFS but by Sun 10th HP has drifted S-wards to Biscay and Britain is under SW-lies.

GEM - like ECM

GEFS - mean temp staying well above norm (say 6C at max) to Sat 16th , good ens agreement to Sat 9th but quite wide divergence in the N later on; only a little rain and that scattered over only a few runs - after Tue 12th in the SE, after Thu 7th in the N & W. [Op run temp for Plymouth shows an improbable 14C above norm on the 14th!]

Originally Posted by: DEW 

Finally, the first signs of a shift are appearing on the horizon, hinting at a possible change in the pattern and a potential displacement of the high-pressure system for the latter half of November. Although it’s still quite far down the line, it’s clear that the current trend can’t persist for ever.


Kingston Upon Thames

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