The Weather Outlook

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Rob K
03 February 2025 23:14:57

And far FI of GFS again likely to be an absolute snorter.

Originally Posted by: nsrobins 

Not this time. All collapses very quickly. 


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

Matty H
04 February 2025 00:13:12

Not this time. All collapses very quickly. 

Originally Posted by: Rob K 

As per earlier discussion around what propagates this type of set up


Yate, Nr Bristol

TBFTEIARBSC

Ally Pally Snowman
04 February 2025 05:41:09
AIFS still producing the goods but slim pickings elsewhere.  In robots we trust?
Bishop's Stortford 85m ASL.
BJBlake
04 February 2025 06:37:11
Yes - cross model support for There being no significant advection of any true cold uppers Or re-load from the Arctic, or indeed retrogression of the HP to Iceland,  just a wobble into the wrong shape for cold and ultimate deflation, (like my mood) with no undercut to create a dramatic and snowy end. In 1993, we had such a HP and it slid SE, but these HP and easterlies were not quite so rare back then.  This is looking like the one that got away....but its still a long way off in model terms and may flip back - as per the AIF...better odds for that than my football team staying in the Prem’ (LOL)!
Brecklands, South Norfolk 28m ASL
BJBlake
04 February 2025 06:39:04
And plenty of HP sunny, dry, frosty weather to enjoy from this set-up.
Brecklands, South Norfolk 28m ASL
Jiries
04 February 2025 06:45:07

AIFS still producing the goods but slim pickings elsewhere.  In robots we trust?

Originally Posted by: Ally Pally Snowman 

All the cold chase posts I read I still see temps at less cold 3 to 4 in reality and not much difference from recent less cold temps.  Those who chasing a lot should worry about the temps refusing to drop much needed subzero from the East.  

Less cold temps I can’t stand it as it completely waste of time and won’t bring powdery snowfalls.

Ally Pally Snowman
04 February 2025 07:22:10

All the cold chase posts I read I still see temps at less cold 3 to 4 in reality and not much difference from recent less cold temps.  Those who chasing a lot should worry about the temps refusing to drop much needed subzero from the East.  

Less cold temps I can’t stand it as it completely waste of time and won’t bring powdery snowfalls.

Originally Posted by: Jiries 

It's does all look rather boring, chilly easterly but no real cold, very little snow. Hopefully we can get some sunshine otherwise it's about as bad as it gets.


Bishop's Stortford 85m ASL.
White Meadows
04 February 2025 07:48:56
Large scale changes in the output this morning. 

Think I’ll dismiss this one as another false dawn, probably the last of the season. 

Roll on spring!

Arbroath 1320
04 February 2025 08:01:24
Very cold uppers, although still a possibility, always looked a long shot. Too far away into FI and so many things which could go wrong.

The models appear to be firming up on a slack, cool, Easterly/SE spell for a good part of this month. Should be mostly dry and decent dog walking weather for me, so not too shabby.


Kenmore, Highland Perthshire, GGTTH
DEW
  • DEW
  • Advanced Member
04 February 2025 08:22:15
WX; [color=var(--bs-body-color)]in week 1 as before - cooler than norm in W Europe but not particularly cold in absolute terms, conversely in the east warmer than norm but still below freezing. In week 2, the freezing area bulks up but unlike yesterday, no advance beyond E Poland. Mostly dry for Europe - little rain for the far NW (e.g. Hebrides) and spots in the Mediterranean.[/color]

GFS Op 00z; HP slower to move up from SW but 1045mb England by Thu 6th, moving on to Belarus 1055mb Sat 8th and back to S Norway Mon 10th flattening into a broad N-S ridge Sat 15th Norwegian Sea to Italy. During this period a general flow across Europe (including Britain) from E or SE but originating in the E Mediterranean so cool rather than deep cold.  From Sat 15th LP takes over, 960mb on Atlantic  eventually linking to another LP which has developed W Russia, and for Britain back to the usual W/SW-lies.

ECM; like GFS but LP on Atlantic on Fri 14th is a shallow trough rather than a focused LP

GEFS; cold spell Wed 5th - Sun 9th (shorter duration than yesterday, in the N interrupted by a milder day on Fri 7th) then mean back to norm with quite a wide spread of ens members. A few runs show small amounts of rain from Sun 9th, then more general from from Sun 16th. Pptn could be snow at times in Scotland.


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

Chichester 12m asl

BJBlake
04 February 2025 08:30:33

Very cold uppers, although still a possibility, always looked a long shot. Too far away into FI and so many things which could go wrong.

The models appear to be firming up on a slack, cool, Easterly/SE spell for a good part of this month. Should be mostly dry and decent dog walking weather for me, so not too shabby.

Originally Posted by: Arbroath 1320 

Totally agree with this. Less mud on the paws, dry and frosty ground, some brightness - walking in the countryside with your dogs is pretty dandy for me.


Brecklands, South Norfolk 28m ASL
Gandalf The White
04 February 2025 09:49:26

Large scale changes in the output this morning. 

Think I’ll dismiss this one as another false dawn, probably the last of the season. 

Roll on spring!

Originally Posted by: White Meadows 

Well, there was never much ensemble support so I wasn’t really expecting anything notable.  Dry and cool to cold will be fine, preferably with light winds.

The days are lengthening and the sun feels a little stronger but we all know the models will change again; and again.  A topsy turvy early spring is not unusual.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



Brian Gaze
04 February 2025 09:51:15
The current models reflect the winter so far as I have experienced it. Interesting, but curiously unsatisfying. 
Brian Gaze

Berkhamsted

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The Beast from the East
04 February 2025 10:08:31

It's does all look rather boring, chilly easterly but no real cold, very little snow. Hopefully we can get some sunshine otherwise it's about as bad as it gets.

Originally Posted by: Ally Pally Snowman 

Yes, the dirty high we had in November was so depressing, no sunshine for weeks. Utterly pathetic but at least no sign of storms. Hopefully we will not get another named one this season. 

With the energy price cap rising again, I think we need some warm weather now. 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

David M Porter
04 February 2025 10:10:04
From what I have seen over recent days, the only model charts which showed anything even approaching a full-blown easterly were in deepest FI, therefore a very long way from a cast-iron certainty or anything close to it.

As things stand at this moment in time, we still have to get the HP to build over the British Isles which is due to start happening tomorrow. Once the HP is in place as indicated we shall see what transpires from then on in. Those of us that have been in this business for a long time will know that the models often struggle with blocked set-ups to one degree or another, so nothing should be ruled in or out at this juncture in my view.


Lenzie, Glasgow

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

Ally Pally Snowman
04 February 2025 10:15:28
Even the robots have given up latest AIFS the 0z is rubbish for cold. Roll on Spring 
Bishop's Stortford 85m ASL.
04 February 2025 10:15:49
It will flip back

usual flip flop


Berkshire
The Beast from the East
04 February 2025 10:35:05
Chances of retrogression to Greenland now slipping away as the block literally does just that and atlantic comes back in from GFS 06z 

30 years ago, it would have gone west but now we have so much power in the northern arm of the jet, only an SSW event can help us, as we got in 2018

No wonder Q has disappeared! 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Quantum
04 February 2025 10:36:57
PSA: The uppers are unusually unreliable for gauging how warm this airmass is.

I've looked at the soundings, alot of 'continental warm nose' type stuff appearing. Its not just that, its also the dryness of the airmass. Usually -6C 850hpa temp corresponds to about a +14C equivalent pot temp at the same level. However we are seeing equivalent pot temps about 3C colder than we would expect from temps.

These two factors work in our favour in the sense that its 'colder' than implied by the T850s. I should add there is one thing working against us, the pressure is high which means the 850 level is higher than usual. However altogether the two 'cold' factors outweigh the one 'warm factor'.

Basically its colder than you think its going to be.


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

nsrobins
04 February 2025 11:01:17
Clearly the ‘rescue’ package is retrogression NW to Greenland, as was signalled for a few runs but now dropped. 

Without it we have a waft of anomalously ‘not that cold’ air from the east, and I’m probably not the only one who doesn’t really get excited by this ‘modern’ version of an easterly. The retrogression signal might return, but given the results so far this winter I wouldn’t bank on it.


Neil

Fareham, Hampshire 28m ASL (near estuary)

Stormchaser, Member TORRO

White Meadows
04 February 2025 11:23:05
Gfs may continue to kick the can down the road but late Feb sunshine can and does rapidly melt any snow. 

Daffs poking up now. Let’s sack off any further teases. Met office mid range should climb back into the fence today or tomorrow. 

ballamar
04 February 2025 11:46:00
Think the lack of deep cold under the high makes it a bit too flaky, unable to get the deeper lows with temperature contrasts underneath to prop up the high. Victims of a warmer winter! Promoted right synoptics but not a good chance of longevity. Hopefully the high can get some cold in the mix
tallyho_83
04 February 2025 12:06:59
I wonder if the models which were very cold a few days ago were picking up on the Stratospheric Warming @ 10hpa and the split of the PV? I just realise now the Stratospheric Warming and split has backed off the model runs seem to have trended milder ? What are your thoughts? 
Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)


Sean Moon

Magical Moon

www.magical-moon.com

fairweather
04 February 2025 12:47:48

Well, there was never much ensemble support so I wasn’t really expecting anything notable.  Dry and cool to cold will be fine, preferably with light winds.

The days are lengthening and the sun feels a little stronger but we all know the models will change again; and again.  A topsy turvy early spring is not unusual.

Originally Posted by: Gandalf The White 

Not now but go back to the ensembles 4 days ago and there was excellent support for at least one week of bitterly cold easterlies for the S.E.


S.Essex, 42m ASL
tallyho_83
04 February 2025 12:55:12

Not now but go back to the ensembles 4 days ago and there was excellent support for at least one week of bitterly cold easterlies for the S.E.

Originally Posted by: fairweather 

True actually.


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


Sean Moon

Magical Moon

www.magical-moon.com

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