The Weather Outlook

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Quantum
  • Quantum
  • Advanced Member Topic Starter
04 January 2025 16:45:26
Not going to read the comments yet, spoilers and I want to enjoy going over all these charts slowly later.

But wow, 12Z ICON and ARPEGE is a big improvement isn't it!


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

Taylor1740
04 January 2025 17:45:40

Not going to read the comments yet, spoilers and I want to enjoy going over all these charts slowly later.

But wow, 12Z ICON and ARPEGE is a big improvement isn't it!

Originally Posted by: Quantum 

I think GFS 12z was slightly further south also which is promising but in just a few hours we will see how it plays out in reality.


NW Leeds - 150m amsl
04 January 2025 17:48:05
Temps way above freezing central southern England now. With drizzle here.

Total non event. Met warning failure 


Berkshire
Retron
04 January 2025 18:03:52

Temps way above freezing central southern England now. With drizzle here.

Total non event. Met warning failure 

Originally Posted by: The Dub Version 

I don't think your post will age well, but we'll see. The MetO text forecast for the SE even mentions rain/sleet to start with, turning to snow later on. And it's what the models have shown for a while too.

"Cloudy, with rain and sleet turning to snow for a time and moving northeast this evening."


Leysdown, north Kent
cultman1
04 January 2025 18:14:31
For London it shows sleet turning to rain from midnight 
Gandalf The White
04 January 2025 18:24:49

Temps way above freezing central southern England now. With drizzle here.

Total non event. Met warning failure 

Originally Posted by: The Dub Version 

Well, firstly the front hasn’t arrived yet and secondly the wording for the south of England says “any snow in southern and eastern parts of England, especially at low levels, will probably be rather transient before turning back to rain.”


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



tierradelfuego
04 January 2025 18:38:58
We are at 0.8c with a DP of -0.1c, it's certainly a mixture here but you can hear some of it is snizzle/graupel, very light though
Bucklebury

West Berkshire Downs AONB

135m ASL

VP2 with daytime FARS

Rainfall collector separated at ground level

Anemometer separated above roof level

WeatherLink Live (Byles Green Crew )

Tim A
04 January 2025 18:41:56
Could be an epic and even historic event , but marginals are so fine. 

https://modeles14.meteociel.fr/modeles/ukmo/runs/2025010412/ukmohd_uk1-46-36-0.png?04-17 

UKMO model shows 30cm of snow for populated parts of W Yorkshire including North and West Leeds , Bradford, Halifax  and then up to Harrogate as well as Pennine towns of Lancashire. Some areas close to 40cm. 

Requires it all to come together, it could all move through more quickly etc as sometimes seems to happen on the day. 


Tim

NW Leeds

187m asl

 My PWS 

Coxy410
04 January 2025 18:48:19
I’m here for Snow Potential, Not Snow Reports.
Steve



Newborough, Cambridgeshire

Brian Gaze
04 January 2025 18:50:00
Yes, please post snow reports here:

https://www.theweatheroutlook.com/twocommunity/Posts/t24211-Snow-Reports-for-January-2025 


Brian Gaze

Berkhamsted

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Crepuscular Ray
04 January 2025 18:52:04

Could be an epic and even historic event , but marginals are so fine. 

https://modeles14.meteociel.fr/modeles/ukmo/runs/2025010412/ukmohd_uk1-46-36-0.png?04-17 

UKMO model shows 30cm of snow for populated parts of W Yorkshire including North and West Leeds , Bradford, Halifax  and then up to Harrogate as well as Pennine towns of Lancashire. Some areas close to 40cm. 

Requires it all to come together, it could all move through more quickly etc as sometimes seems to happen on the day. 

Originally Posted by: Tim A 

Hope you do well in my old stomping ground Tim, I'll be looking out for your posts ❄️❄️


Jerry

Edinburgh, in the frost hollow below Blackford Hill

Quantum
  • Quantum
  • Advanced Member Topic Starter
04 January 2025 20:08:06
In northern England it feels like the snow/rain boundary tommorow will be more west->east than north->south. Milder air coming off the sea in 0C uppers turns the snow mushy.

Still, right near the centre of the low the winds will be so light that this effect could diminish.

Part of me is expecting a rain (inital light)->snow (early morning)->rain (as uppers rise to 0C)->snow (as winds fall light)->rain (as winds pick up again)->snow (back edge) event


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

glenogle
04 January 2025 21:02:19
Meto model has been showing this as much more showery event the further north you go than the other models.  Although it looks like if you get in the right areas for one of the showers in somewhere like the borders, you could still get 24hrs of snow.  The risk here is lowering all the time sadly. Expecting no more than a cm or two to top up the dusting of previous days.  It might even rain. Today has been damp and foggy, wonder if the lack of deep cold puts everything on the wrong side of marginal unless you are 200m plus up?
UserPostedImage LLTNP 105m asl 
fairweather
05 January 2025 00:10:46
Is there any possibility that the front has stalled or is slower moving than expected? Certainly more snow here than I was expecting and no signs of any warming after 3 hours of sleety snow. Now a dusting on all surfaces and it is at its heaviest at midnight despite me being right on the southern edge of its track north. Now at its lowest 0.8C.
S.Essex, 42m ASL
Bolty
05 January 2025 00:29:21
I have to drive up the M6 to the Penrith junction on Monday. Looking at the forecast, I might not be going because the forecast for the Shap Summit looks diabolical; pretty much non-stop snow until Monday morning. Hopefully they'll keep the motorway clear, but I doubt it.
Scott

Blackrod, Lancashire (4 miles south of Chorley) at 156m asl.

My weather station 

Quantum
  • Quantum
  • Advanced Member Topic Starter
05 January 2025 07:27:44
I know we are now in nowcasting mode but the models are still useful; they are initialized with satellite and observational data.

Anyway the 0Z is another shift south with the 18Z aberation more or less corrected so we are back to the 12Z of yesterday or even slightly further south.

The LP centre and light wind zone should be interesting, wonder how widespread freezing rain is.


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

Tim A
05 January 2025 08:15:57
Models suggest snow to 12ish here then cold or freezing rain. But warmer uppers seem quite stubborn this evening, don't really buy the turning back to snow as per GFS and WRF , latest UKV (6z) suggests rain tonight . Would prefer a quick transition to dryer conditions so everything can freeze instead but that seems unlikely now. 
Tim

NW Leeds

187m asl

 My PWS 

1981ianc
05 January 2025 10:51:15
GFS 0600 still suggesting back edge snow for Monday morning commute in Midlands.
Retron
05 January 2025 10:56:24

Would prefer a quick transition to dryer conditions so everything can freeze instead but that seems unlikely now. 

Originally Posted by: Tim A 

FWIW, this was the scene in my road last night (as taken by my neighbour, I was fast asleep), after several hours of drizzle, rain and sleet, and with temperatures above freezing for the previous 15 hours or so - indeed, temperatures remained above freezing even as the snow fell.

You don't need freezing temperatures for snow to settle, just a low enough dewpoint and heavy enough snow.

https://i.postimg.cc/Bn7fwdwg/snow.jpg 

UserPostedImage


Leysdown, north Kent
idj20
05 January 2025 11:04:37
I guess all eyes are now on the southern tracking shallow low on Wednesday. As often the case with modelling from four days away, there are some uncertainty. Will the low travel too far south and it ends up being dry but cold here at Kent? Or too far north and it's marginal slop or rain, again for here at Kent? Or will it hit the sweet spot putting Folkestone under cold and unstable air for once? One way to find out, but either or it looks like being the last chance saloon for quite a while - possibly rest of this Winter season!

Yes, this is a bit of an IMBY post, but like Jiries said, I pay my council tax and mortgage so I have every right to go on about my location. 🤣


Home location: Folkestone Harbour.
Jiries
05 January 2025 11:14:28

I guess all eyes are now on the southern tracking shallow low on Wednesday. As often the case with modelling from four days away, there are some uncertainty. Will the low travel too far south and it ends up being dry but cold here at Kent? Or too far north and it's marginal slop or rain, again for here at Kent? Or will it hit the sweet spot putting Folkestone under cold and unstable air for once? One way to find out, but either or it looks like being the last chance saloon for quite a while - possibly rest of this Winter season!

Yes, this is a bit of an IMBY post, but like Jiries said, I pay my council tax and mortgage so I have every right to go on about my location. 🤣

Originally Posted by: idj20 

That right Ian 🤣

Regarding this Low, there some things need to check, temperatures, intensity of the precips and timing, but first 2 really need to be colder and not less cold temps like this one today and not being light to dandruff snow affairs.  If this move north not good for Midlands as it will be cloudy and prevent proper snow showers or other features passing here as temps will be more colder during the week.

Brian Gaze
05 January 2025 11:19:18
I think it's worth keeping an eye on developments tomorrow. It looks like there could be some snow in southern and central Britain once the main area of precipitation pulls away. 
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

Jiries
05 January 2025 11:19:43

GFS 0600 still suggesting back edge snow for Monday morning commute in Midlands.

Originally Posted by: 1981ianc 

Will see that if this good and prolong heavy enough but not a good timing as many going back to schoo/work like me tomorrow during the 7am to 7pm shift so will not see much of it except break time. No window at my work place only at the canteen.

Matty H
05 January 2025 12:15:22
ICON and ARPEGE have a fair bit of snow here from Weds system. MetO text forecast having none of it. Mentions the possibly of some rain in the south of the region. 
Yate, Nr Bristol

TBFTEIARBSC

The Beast from the East
05 January 2025 12:27:35
quite a few of the latest GEFS bring snow to the South on Wed.  
Purley, Surrey, 70m ASL

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