The Weather Outlook

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Retron
29 December 2024 05:10:25

Yes, you cant really look forward to a cold spell with that threat hanging over us.  We have been lucky so far with the storms which havent really caused much damage. Perhaps our luck will run out now. Would be a terrible start to the new year.

Originally Posted by: The Beast from the East 

Have to say, the 0z GFS is even more atrocious than yesterday's 12z (didn't see the 18z). I still think everyone's focusing more on the snow/cold/exciting stuff rather than the horrendous New Year's Day to come. (Understandable for those up north, mind you, who'll yet again get to miss the worst - this is a repeating theme this autumn/winter).

The MetO raw now has gusts to 55, as high as I've ever seen them 4 days out, and this morning's GFS serves up 75mph here, which would be very destructive. More widely there are gusts in the low to high 60s across Wales and the MIdlands south - the vast majority of the population would be affected.

There remains some hope in that the GEFS doesn't show it as being inevitable, but a strong or destructively strong spell of winds is still likely.

https://images.meteociel.fr/im/47/22025/90_289UKxlk7.GIF 

UserPostedImage

Even Arpege is on board now, and I always take note of that as it got the 1987 storm whereas MetO's model didn't. As a reminder, burgundy is 62+, the purple shade up from it is 68+. These winds are rare inland and would, given the sodden ground, bring down many a tree.

https://images.meteociel.fr/im/33/11224/arpegeuk_52_102_0zvw0.png 

UserPostedImage


Leysdown, north Kent
Jiries
29 December 2024 06:08:27
Any chance to see this low push further south to avoid strong winds over the southern parts ? Still 3 days left to go for further adjustment to remove strong gusts there and remove snow chances over boring suspect places to the Midlands and to the south that badly needed.
Retron
29 December 2024 06:14:53

Any chance to see this low push further south to avoid strong winds over the southern parts ? Still 3 days left to go for further adjustment to remove strong gusts there and remove snow chances over boring suspect places to the Midlands and to the south that badly needed.

Originally Posted by: Jiries 

Yes, but it's a much smaller chance than it was this time yesterday - you have to dig into ensembles to find that option. All the main models have a swathe of 60+ winds crossing England and Wales, but some (e.g. ICON and MetO) show a narrower, weaker band (but still with 60+) compared to the others.

I'd say it's very likely that the low will take the northern track, the devil in the detail will be how much it can deepen as it moves across. Less deepening = slightly less strong winds. This morning's operational GFS was at the extreme end of the pack, hopefully not leading the way!

I would expect warnings to be issued later today, on the basis that one was deemed necessary yesterday for 50-60 gusts over high areas on Monday.


Leysdown, north Kent
Jiries
29 December 2024 06:29:11

Yes, but it's a much smaller chance than it was this time yesterday - you have to dig into ensembles to find that option. All the main models have a swathe of 60+ winds crossing England and Wales, but some (e.g. ICON and MetO) show a narrower, weaker band (but still with 60+) compared to the others.

I'd say it's very likely that the low will take the northern track, the devil in the detail will be how much it can deepen as it moves across. Less deepening = slightly less strong winds. This morning's operational GFS was at the extreme end of the pack, hopefully not leading the way!

I would expect warnings to be issued later today, on the basis that one was deemed necessary yesterday for 50-60 gusts over high areas on Monday.

Originally Posted by: Retron 

If was blizzards same time then yes wouldn’t mind that as not seen this since 22nd Jan 2005 blizzards in Toronto which I love to experience here.   Let see how it goes on Wed on the track of this low. 

Retron
29 December 2024 07:02:14
This morning's updated ensemble watch - a definite trend colder since yesterday. (Chart shows GEFS runs reaching -10/-15 at 850 for London).

https://ukwct.org.uk/weather/ens.png?29 

UserPostedImage


Leysdown, north Kent
Richard K
29 December 2024 07:14:26
Could really do with that storm on the 1st weakening, and it would suit me if it dropped a bit south. But after thar some interesting wintry possibilities 
Saffron Walden, NW Essex, approx 70m above sea level (when the tide is out)
Tim A
29 December 2024 07:20:39
I too want the low further South so it can bring me snow. Looks at the moment that it will be the Borders /Far North of England that get a good snowfall but there is still time for change.  However I can't see a single model (apart from Met office app that still has a high of 3c here on NYD) that brings us into the game anymore, whereas yesterday there were more options to bring it further South.


Tim

NW Leeds

187m asl

 My PWS 

Quantum
29 December 2024 07:29:19

I too want the low further South so it can bring me snow. Looks at the moment that it will be the Borders /Far North of England that get a good snowfall but there is still time for change.  However I can't see a single model (apart from Met office app that still has a high of 3c here on NYD) that brings us into the game anymore, whereas yesterday there were more options to bring it further South.

Originally Posted by: Tim A 

Its too early to tell. My experience is these things are always more likely to trend south. And Sheffield most of the time ends up being the sweet spot. No guarantees but I'd expect a southward shift more likely than a northward one.

The ICON3Z has shifted south on the 0Z for what its worth.

UKV3Z is also about 50 miles south of the UKV0Z


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

Russwirral
29 December 2024 08:48:47
ECM tpys with the idea of the beast...

Havent seen a chart like that for maybe 2 or 3 yrs... 


White Meadows
29 December 2024 09:01:09
2m temps falling off a cliff to start the new year. Early signs of a Scandy surprise this morning. 

https://www.wetterzentrale.de/en/show_diagrams.php?geoid=49069&model=ecm&var=5&run=00&lid=ENS&bw=1 

DEW
  • DEW
  • Advanced Member
29 December 2024 09:09:00
The New Year's Day storm appears nailed on with even the cautious TV presenters issuing warnings for travel  a few days out, though the models appear to have drawn back from the extremes. And the cluster of cold ens members are showing their hand, too.

WX charts; week 1 just about on the cold side of norm for N Europe inc Britain, with  the unusually above norm to the NE getting pushed S-wards to the Black Sea. In week 2, indications of a full-on E-ly with freezing weather across all of N Europe, affecting most of Britain and ultra cold for Scandinavia. But there's quite a sharp temp gradient N-wards from Mid-France which with Spain stays quite mild, with the implication of 'interesting' weather along the Channel. Pptn quite heavy in week 1 for N Scotland and N France; in week 2 affecting most of W Europe with the heaviest for Portugal, SW Britain and the Alps.

GFS Op 00z: current HP fading rapidly. Small LP 995mb running across Scotland Tue 31st then a deeper one 985mb across N Britain Wed 1st though not as stormy as on some of yesterday's charts. This begins to draw in the N-lies, gently at first, much stronger Tue 7th as LP 980mb runs up the English Channel. This runs into Scandinavia and keeps NE-lies going for a while before pressure rises over Greenland and diverts a deep LP 965mb towards Biscay with strong E-lies for Britain, looking very cold in Scotland as the source there in N Norway rather than N Germany, as for England.

FAX has both storms, 998mb Tue 31st Scotland, and 990mb Wed 1st SW England, and looks stormier than GFS.

ECM: Not nearly as dramatic as GFS; LP Wed doesn't amount to much and the winds soon back into the NW rather than N - though in the last chart of the run Wed 8th, HP near Iceland is encouraging a cold pool over Germany to track towards Britain. 

GEM: also downgrades the NYD storm though strong enough to draw in NE-lies for a while before relaxing to NW-ly like ECM. Then on Tue 7th an LP tracking down the N Sea brings in some very cold air from the east with a large HP block over Greenland.

GEFS: Although a random selection of milder outliers in the S offer a note of caution to cold rampers, the large majority of ens members descend into the freezer Thu 2nd (5C below norm) and agree to stay there for several days, slowly relaxing their grip and becoming less unanimous after Thu 9th though mean is still a couple of degrees below norm. Pptn heavy 1st/2nd, also 31st/1st in Scotland, some more likely  for England around Sun 5th, persisting with small amounts thereafter. Snow row predicting chances of 1/3 in the south, 2/3 for N England, certain for N Scotland; lower snow row figures after NYD probably indicating that if there is pptn it will be snow, rather than a choice between rain and snow.


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

Chichester 12m asl

Ally Pally Snowman
29 December 2024 09:14:17
Very snowy GFS and GEM this morning.  But as ever we will believe it when we see it. Stunning Output atm though.

https://www.wetterzentrale.de/en/topkarten.php?map=20&model=gfs&var=25&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref 


Bishop's Stortford 85m ASL.
ballamar
29 December 2024 09:15:44

Very snowy GFS and GEM this morning.  But as ever we will believe it when we see it. Stunning Output atm though.

https://www.wetterzentrale.de/en/topkarten.php?map=20&model=gfs&var=25&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref 

Originally Posted by: Ally Pally Snowman 

For most 😂

David M Porter
29 December 2024 09:48:46
IIRC, the last time we had output as good as this in terms of cold chances was in early 2021, the last decent winter here for cold weather overall. Before that, it was the Beast from the East at the end of the 2017/18 winter. We have been teased at times since of course; let's hope that the models are really onto something this time.
Lenzie, Glasgow

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

The Beast from the East
29 December 2024 09:55:32
Here comes the storm (whatever stupid name they are going to call it), I suspect it will be remembered for some, Christ, what a terrible way to start the year. 

https://modeles16.meteociel.fr/modeles/gfs/runs/2024122906/gfs-0-78.png?6 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Jiries
29 December 2024 09:57:24

IIRC, the last time we had output as good as this in terms of cold chances was in early 2021, the last decent winter here for cold weather overall. Before that, it was the Beast from the East at the end of the 2017/18 winter. We have been teased at times since of course; let's hope that the models are really onto something this time.

Originally Posted by: David M Porter 

Let hope so and having no more wet, rainy dull HP in Jan the better is.   i also wondering the cold air from the east feeding the N Altantic will help to lower the SSTs to normal levels so giving us a better summer afterward?  I read that recent high SSTs over that regions gave us very poor summer set-up.

fairweather
29 December 2024 09:57:45

Could really do with that storm on the 1st weakening, and it would suit me if it dropped a bit south. But after thar some interesting wintry possibilities 

Originally Posted by: Richard K 

Norwich has hit 143 on the snow row ! You are probably well placed for snow, I could be but may be a bit too far south, we will see.


S.Essex, 42m ASL
Retron
29 December 2024 10:02:00

Here comes the storm (whatever stupid name they are going to call it), I suspect it will be remembered for some, Christ, what a terrible way to start the year. 

https://modeles16.meteociel.fr/modeles/gfs/runs/2024122906/gfs-0-78.png?6 

Originally Posted by: The Beast from the East 

Yes, unfortunately the 6z GFS ramps the winds up even more - that's widespread 70s to 75s across everywhere from the Midlands south. Atrocious once again, and most discomfiting considering that the 0z op, which had lower speeds, was already above the rest of the GEFS pack.

https://images.meteociel.fr/im/1/5989/84_289UKuuv2.GIF 

UserPostedImage

I can only hope the GFS is still overdoing that low. If not, it'll be widespread destruction and will doubtless be the main headline news. It would also lead to widespread power cuts just as the weather turns much colder!

I still expect a warning to be issued today.


Leysdown, north Kent
Jiries
29 December 2024 10:03:04

Very snowy GFS and GEM this morning.  But as ever we will believe it when we see it. Stunning Output atm though.

https://www.wetterzentrale.de/en/topkarten.php?map=20&model=gfs&var=25&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref 

Originally Posted by: Ally Pally Snowman 

47cm over Brimingham area? why we get more than the east as they suppose to be more than us?

CField
29 December 2024 10:03:24
AIFS looking a lot more realistic this morning.The easterly looks cold sunny bone dry to me with the action further south.
Favourite snowstorm

Famous channel low

Dec 31st 1978

Hastings East Sussex

Foot of level snow severe drifting

Next day max temp -4 degrees Celsius

fairweather
29 December 2024 10:03:59

IIRC, the last time we had output as good as this in terms of cold chances was in early 2021, the last decent winter here for cold weather overall. Before that, it was the Beast from the East at the end of the 2017/18 winter. We have been teased at times since of course; let's hope that the models are really onto something this time.

Originally Posted by: David M Porter 

Nothing to speak of here in 2021. The good old Beast was the only thing really of any note snow wise or deep snow in last 13 years. Let's hope it doesn't kick off the basic climate change deniers.


S.Essex, 42m ASL
The Beast from the East
29 December 2024 10:06:21

I can only hope the GFS is still overdoing that low. If not, it'll be widespread destruction and will doubtless be the main headline news. It would also lead to widespread power cuts just as the weather turns much colder!

I still expect a warning to be issued today.

Originally Posted by: Retron 

At least it moves through fairly quickly but so did the Oct 87 Great storm. 

I think our luck has finally run out.  Those insurance companies are going to be busy


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Matty H
29 December 2024 10:17:34

Very snowy GFS and GEM this morning.  But as ever we will believe it when we see it. Stunning Output atm though.

https://www.wetterzentrale.de/en/topkarten.php?map=20&model=gfs&var=25&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref 

Originally Posted by: Ally Pally Snowman 

Good old day 10 for the South


Yate, Nr Bristol

TBFTEIARBSC

Retron
29 December 2024 10:21:00
Looks like the 6z GFS corrects the 0z cold spell into a 2½ day cold snap in the south... at least there's some frontal snow before it chucks it down with rain. It still looks excellent in terms of snow for the Midlands north, however.

Frankly I'd rather lose the snow and lose the winds at the same time, but I wouldn't be at all surprised if instead we lost the snow and kept the winds!


Leysdown, north Kent
Ally Pally Snowman
29 December 2024 10:22:13

Good old day 10 for the South

Originally Posted by: Matty H 

Indeed , I've probably posted 100s if not 1000s of snowy charts on this forum over the years.  How often do they come off? Probably less that 2%.


Bishop's Stortford 85m ASL.

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