Remove ads from site

Jiries
16 December 2022 17:01:41

12z out to +168 markedly similar to the 6z in terms of the UK'ish wider region. Angles the low to our NNE slightly differently, which changes the shape of the finger of very cold air coming in from the NNW. On the 6z, it's repulsed by the development of the next Atlantic turd that plonks its malevolent arse down to our SW and pumps mild crap northwards; on the 12z, it's sadly the same end result.

Fecking heights over mainland Europe/Med again. Stiffs us every sodding time. Ideally need the lows to be crashing through mainland Europe and reports of persistent rain across Spain/Southern France/Italy/Balkans.

 

Originally Posted by: Saint Snow 


Should be wet there now as it winter time not summer time for HP to sit around for ages.  
Joe Bloggs
16 December 2022 17:03:17
This absolutely needs watching. A smidgeon further south could result in a major Christmas snowfall for central areas, akin to the 18z last night. Fine margins. 

Unlikely but the risk is there. 

https://www.wetterzentrale.de/maps/GFSOPEU12_186_1.png 

 

Manchester City Centre, 31m ASL

Jiries
16 December 2022 17:09:23

This absolutely needs watching. A smidgeon further south could result in a major snowfall for central areas, akin to the 18z last night. Fine margins. 

Unlikely but the risk is there. 

https://www.wetterzentrale.de/maps/GFSOPEU12_186_1.png 

 

Originally Posted by: Joe Bloggs 



Being 8 days away give time to correct south as they do often.

Are you aware that there some snow coming down here tomorrow morning after a hard cold frost tonight?  It appeared on the apps showing snowing from 7am to 10am.   Can't be trusted with it but why it appeared? Any short range model showing it? Thought will be dry tomorrow with some sunshine and clouds increaseing during the day.
Joe Bloggs
16 December 2022 17:09:38

By Xmas Eve, the -5c 850 line is pretty much the Scottish border. The -10c just south of Shetland.

Problem is, that low to our S/SW seems to have moved in for Xmas. Unless it shifts its unwelcome ass - and per both the 6z and 12z, that's not going to happen - Xmas in E&W will be crap from a weather perspective: wet, mild (7-10c maxes away from the far north of England), windy.

Where's the sick bowl?

 

Originally Posted by: Saint Snow 



Did you see the 18z GFS last night? It showed the mother of all snow storms for our region on Christmas Eve.

More recent runs have not removed the risk and there is a clear trend of a low pushing through the UK with some very cold air on its northern flank around Christmas time. The latest run shows the Central belt of Scotland as the snow zone but the risk could move further south.

Manchester City Centre, 31m ASL

Joe Bloggs
16 December 2022 17:15:09

Being 8 days away give time to correct south as they do often.

Are you aware that there some snow coming down here tomorrow morning after a hard cold frost tonight?  It appeared on the apps showing snowing from 7am to 10am.   Can't be trusted with it but why it appeared? Any short range model showing it? Thought will be dry tomorrow with some sunshine and clouds increaseing during the day.

Originally Posted by: Jiries 



Hello 🙂 , yes there is some precipitation moving in tomorrow. Sadly there’s a maritime influence with it so (in this region) anyway , looks like rain or sleet, before the big mild push on Sunday. 

Manchester City Centre, 31m ASL

moomin75
16 December 2022 17:23:10
Good grief that 12z GFS really does spell the end. Horrendous for collies, utterly depressing and definitely no quick way back.
Witney, Oxfordshire
100m ASL
picturesareme
16 December 2022 17:28:27

Good grief that 12z GFS really does spell the end. Horrendous for collies, utterly depressing and definitely no quick way back.

Originally Posted by: moomin75 



From my experience collies love rain & mud.
moomin75
16 December 2022 17:34:22

From my experience collies love rain & mud.

Originally Posted by: picturesareme 

Haha. Bloody auto correct. 😂😂🌧 
Witney, Oxfordshire
100m ASL
White Meadows
16 December 2022 17:34:30
Looking dire for coldies (not collies) for the foreseeable. 

A sleety couple of hours followed by a few frosts makes this a very unforgettable cold spell here. 

Bring on the daffodils!!
 
doctormog
16 December 2022 17:42:09
Here  is the 12z GEFS ensemble mean chart for Christmas Day:

UserPostedImage
Brian Gaze
16 December 2022 17:51:43
Looks like a big shift from the GEFS 12z tonight for Christmas Day. Mean below, but you can step through the individual runs here:

https://www.theweatheroutlook.com/twodata/gefs.aspx?run=na&charthour=222&chartname=500mb&chartregion=na-region&p=0&charttag=500hPa%20GPDM 


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
Joe Bloggs
16 December 2022 18:02:24

Here  is the 12z GEFS ensemble mean chart for Christmas Day:

UserPostedImage

Originally Posted by: doctormog 



Supports my comments earlier about a cold and snow risk over the Christmas period, especially (but maybe not exclusively) in the north.

Manchester City Centre, 31m ASL

Gary L
16 December 2022 18:04:25
12z GFS ENS seem to show a 'warmer' cluster developing in the run up to Christmas and then a colder cluster. Manchester snow depth ENS actually the most lively they've been all winter so far around Christmas and beyond.
Zubzero
16 December 2022 18:06:31
As I've said before I can not see much cold away from the north over the Xmas period as heights to the south are a major spanner in the works of any cold spell. And starting to see signs in to the new year off the vortex off doom returning to its Winter home.
Ally Pally Snowman
16 December 2022 18:08:27
GEFS look like they're picking up another cold spell for the South Boxing Day.
 
Bishop's Stortford 85m ASL.
Joe Bloggs
16 December 2022 18:08:51

12z GFS ENS seem to show a 'warmer' cluster developing in the run up to Christmas and then a colder cluster. Manchester snow depth ENS actually the most lively they've been all winter so far around Christmas and beyond.

Originally Posted by: Gary L 



That’ll be the low running through central Britain. 

Manchester City Centre, 31m ASL

Brian Gaze
16 December 2022 18:16:42
Met Office Global is also worth a look at t+168

https://www.theweatheroutlook.com/twodata/ukmet.aspx?run=12&charthour=168&chartname=500hpa_height&chartregion=na&charttag=500hPa%20GPDM 
 
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
Joe Bloggs
16 December 2022 18:22:38


Similar theme if a little earlier, and a little further north than the GFS. Somewhere may cop it late next week/weekend. 

The snow risk may evaporate completely in future runs if the low develops too much, or it may yet increase for southern areas. Wouldn’t want to call it quite yet. 

Manchester City Centre, 31m ASL

Taylor1740
16 December 2022 18:26:57

Good grief that 12z GFS really does spell the end. Horrendous for collies, utterly depressing and definitely no quick way back.

Originally Posted by: moomin75 


Yes that does look utterly horrendous with strong high pressure to the South, a dreaded pattern that has become all too common in recent years. If that was to verify I would say it would be a very long way back from that if it all.
NW Leeds - 150m amsl
Joe Bloggs
16 December 2022 18:31:41
I feel sorry for any newbies/lurkers reading this thread tonight. 😂

Manchester City Centre, 31m ASL

Downpour
16 December 2022 18:49:44

No surprise for me. It will be another typically green, damp, mild squib of a Christmas, just like we experience nearly every year.In my 46 years on this planet, I have not witnessed a single white Christmas, and the 2010 December, I was in Australia, so missed all the fun and games!​​​​​​​I still think the next cold chase will be in the New Year, and a couple of weeks at least.​​​​​​​Our hope remains, as the atmosphere is not in its normal winter state.    

Originally Posted by: moomin75 



Probably a fair summary. My hopes are now pinned on squeezing a dry interlude on Christmas Day for my walk to the pub.
Chingford
London E4
147ft
Joe Bloggs
16 December 2022 18:52:35
No snow risk on the ECM det run. 

Manchester City Centre, 31m ASL

doctormog
16 December 2022 18:53:51

I feel sorry for any newbies/lurkers reading this thread tonight. 😂

Originally Posted by: Joe Bloggs 



It’s the collies I feel for the most. Given the synoptics it’s not surprising to see the ECM 12z op run nor would it be surprising to see a large range of other options on the ensemble set for around Christmas.

The GEFS set has an increasingly cold cluster for here around Christmas. Maybe the ECM set will have too, but maybe not!
Heavy Weather 2013
16 December 2022 18:54:44

Yes that does look utterly horrendous with strong high pressure to the South, a dreaded pattern that has become all too common in recent years. If that was to verify I would say it would be a very long way back from that if it all.

Originally Posted by: Taylor1740 



I guess like November then?

That is one example where we look stuck and suddenly a new trend appeared. It can and will happen. The current patterns of highs to the south are not ideal, but will the PV destroyed right now, if heights do degrade to the south the pattern can and will return favourably for the UK.
Mark
Beckton, E London
Less than 500m from the end of London City Airport runway.
shepherd
16 December 2022 19:11:58
Shame but it's all over now. We can always hope for Something in later January.

Remove ads from site

Ads