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Rob K
10 February 2021 10:30:33

2m overnight temps from the GFSP on day 8. Chilly.



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
The Beast from the East
10 February 2021 10:31:42

Most of the GEFS seem to be backing the op and control, and some belters like this. No point going beyond 144 at this stage


Will GEM and ECM change tonight?



"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Quantum
10 February 2021 10:31:48

Modele GFS - Carte prévisions


Dewpoints never get above freezing on the GFS6Z.


This is a major upgrade if you want cold air at the surface.


The mild airmass never makes it.


 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
doctormog
10 February 2021 10:33:06
Both GFS op and parallel run seem to want to bring in a spell of snow up here off the North Sea on this run on Friday. The Met Office forecasts says "cold with a few snow showers". Time will tell.
The Beast from the East
10 February 2021 10:35:06

Beast is back in business for one last fling



"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Gooner
10 February 2021 10:37:54


Bloody hell ...........here we go again 


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


The Beast from the East
10 February 2021 10:39:18

loving the op run! Stays cold at the surface throughout and then a possible meeting of extreme airmasses



"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
doctormog
10 February 2021 10:39:27
I would give it a couple of days of wobbling around before drawing any conclusions about the breakdown and beyond, especially given the current model divergence.
The Beast from the East
10 February 2021 10:40:47


 


Bloody hell ...........here we go again 


Originally Posted by: Gooner 


We need to see GEM flip tonight. Its been solid about the Atlantic blasting through


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
hobensotwo
10 February 2021 10:43:57



Bloody hell ...........here we go again 


Originally Posted by: Gooner 


Looks good. Is this officially the next chase? Might be worth a punt.


It does seem more in keeping with all the blocking anomalies that have been shown over the last few weeks.

The Beast from the East
10 February 2021 10:44:26

BOOM 



"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Quantum
10 February 2021 10:44:59

Thank god for friction.


If the air actually followed the isobars we'd be screwed.


 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Saint Snow
10 February 2021 10:45:22


 


My experience of snowy breakdowns is very poor and best avoided. Typically in the South East we have sub-zero temperatures, cloud thickening, winds picking up to make it feel very raw. This is followed by 30 minutes of light sleet/wet snow/freezing rain, which is in turn followed by a critical rise in temperature and 6 hours of cold to mild heavy rain ....


Originally Posted by: GezM 


 


They're extremely hit & miss - and for here at least, most/all in the past couple of decades at least have been as disappointing as you describe, although I've got memories of a few of snowy breakdowns in the 80's and 90's.


I therefore view the GFS forecast with scepticism, more in hope than expectation. As someone whose snowfalls this spell have been pitifully small (with little prospect of that changing in the current set-up), a snowy breakdown and seeing snow pile up for 24-36 hours before the rain moves in (all per GFS) is better than a continuation of cold and predominantly dry. I appreciate those who've fared better for snow won't agree.


The worst letdown was on NYE 2000 (into 2001). Thick snow on the ground already from a few nights previous, heavily frozen. An active front coming in from the west. BBC forecasting several hours of heavy snow starting around 8-9pm as the front hits the cold air (and you always hope they're underestimating the cold block). I could almost see the headlines of thousands of NYE revellers having to spend the night in clubs and bars as snow chaos reigned. Here, it snowed for about 5 mins, another 10 or so mins of sleet, then the heavy rain set about washing away the standing snow. 


 



Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
Saint Snow
10 February 2021 10:52:06


 


 


They're extremely hit & miss - and for here at least, most/all in the past couple of decades at least have been as disappointing as you describe, although I've got memories of a few of snowy breakdowns in the 80's and 90's.


I therefore view the GFS forecast with scepticism, more in hope than expectation. As someone whose snowfalls this spell have been pitifully small (with little prospect of that changing in the current set-up), a snowy breakdown and seeing snow pile up for 24-36 hours before the rain moves in (all per GFS) is better than a continuation of cold and predominantly dry. I appreciate those who've fared better for snow won't agree.


The worst letdown was on NYE 2000 (into 2001). Thick snow on the ground already from a few nights previous, heavily frozen. An active front coming in from the west. BBC forecasting several hours of heavy snow starting around 8-9pm as the front hits the cold air (and you always hope they're underestimating the cold block). I could almost see the headlines of thousands of NYE revellers having to spend the night in clubs and bars as snow chaos reigned. Here, it snowed for about 5 mins, another 10 or so mins of sleet, then the heavy rain set about washing away the standing snow. 


 


Originally Posted by: Saint Snow 


 


Of course, the outcome that would suit both those in the western half of the UK AND keep the SE'ers happy, is the GFS 6z 


This has Saturday's push from the west bringing snow to the western half, then fizzling, followed by the second push on Monday doing similar. The southern half of the front is showing as les snowy and more rainy, so it's a bit cruel on those in the SE and S Wales, but N Wales, W Midlands, NW England, west half of Scotland and NI could have it good. That second front then fizzled on the Tuesday, with the block reasserting itself. The SE/E never warm up.


 



Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
ballamar
10 February 2021 10:57:49


 


 


Of course, the outcome that would suit both those in the western half of the UK AND keep the SE'ers happy, is the GFS 6z 


This has Saturday's push from the west bringing snow to the western half, then fizzling, followed by the second push on Monday doing similar. The southern half of the front is showing as les snowy and more rainy, so it's a bit cruel on those in the SE and S Wales, but N Wales, W Midlands, NW England, west half of Scotland and NI could have it good. That second front then fizzled on the Tuesday, with the block reasserting itself. The SE/E never warm up.


 


Originally Posted by: Saint Snow 


Assume you mean SW and S Wales!!

Saint Snow
10 February 2021 11:01:09


 


Assume you mean SW and S Wales!!


Originally Posted by: ballamar 


 


Yes. Damn these sausage-fingers 



Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
Joe Bloggs
10 February 2021 11:02:58


 


 


Of course, the outcome that would suit both those in the western half of the UK AND keep the SE'ers happy, is the GFS 6z 


This has Saturday's push from the west bringing snow to the western half, then fizzling, followed by the second push on Monday doing similar. The southern half of the front is showing as les snowy and more rainy, so it's a bit cruel on those in the SE and S Wales, but N Wales, W Midlands, NW England, west half of Scotland and NI could have it good. That second front then fizzled on the Tuesday, with the block reasserting itself. The SE/E never warm up.


 


Originally Posted by: Saint Snow 


It would be incredible to have a repeat of 5th/6th Feb 96. Deep snow on Merseyside and Blackpool virtually cut off. Such a rare setup. 



Manchester City Centre, 31m ASL

Rob K
10 February 2021 11:08:24


 


That's quite a shift to prolonging the cold at the surface on the 6Z GEFS.


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
MStewart
10 February 2021 11:10:17

Today’s GFS6z is looking very good, too good almost. But I’m not convinced of a mild at.antic breakdown at the moment either.  Can’t wait to see the corresponding GEFS to see if there is greater support from other members or just a random outlier.


carol kirkwood and Thomas big hair both cautioning against the expected change to mild weather too 🙂


Mark
Twickenham
12m ASL
CField
10 February 2021 11:14:07

Those showers looks beefier for the south east today......


Favourite snowstorm
Famous channel low
Dec 31st 1978
Hastings East Sussex
Foot of level snow severe drifting
Next day max temp -4 degrees Celsius
surbitonweather
10 February 2021 11:20:21
The usual ‘the further North & East you are the better scenario’...........

A bit of NIMBYism creeping in from me.....it’s the 3 days of snowing without hardly any settling which has done it 😬😬
Surbiton, Surrey 21m ASL
Crepuscular Ray
10 February 2021 11:48:45

Both GFS op and parallel run seem to want to bring in a spell of snow up here off the North Sea on this run on Friday. The Met Office forecasts says "cold with a few snow showers". Time will tell.

Originally Posted by: doctormog 


Theres a yellow warning for you Doc for Thurs & Fri


Jerry
Edinburgh, in the frost hollow below Blackford Hill
doctormog
10 February 2021 11:59:30


 


Theres a yellow warning for you Doc for Thurs & Fri


Originally Posted by: Crepuscular Ray 


Yes, I noticed that and was wondering if it was associated with the same little system.


GezM
  • GezM
  • Advanced Member
10 February 2021 12:10:11


Of course, the outcome that would suit both those in the western half of the UK AND keep the SE'ers happy, is the GFS 6z 


This has Saturday's push from the west bringing snow to the western half, then fizzling, followed by the second push on Monday doing similar. The southern half of the front is showing as les snowy and more rainy, so it's a bit cruel on those in the SE and S Wales, but N Wales, W Midlands, NW England, west half of Scotland and NI could have it good. That second front then fizzled on the Tuesday, with the block reasserting itself. The SE/E never warm up.


 


Originally Posted by: Saint Snow 


The precipitation animation for the Op run is fascinating. Repeated failed attempts by the Atlantic to break through, each front stalls over the Western UK and fizzles out before being pushed back.


If that was to verify, some western areas could really accumulate snow over the 14 day period ..... 


https://www.wetterzentrale.de/topkarten.php?map=1&model=gfs&var=4&time=0&run=6&lid=OP&h=0&mv=0&tr=6


 


Living in St Albans, Herts (116m asl)
Working at Luton Airport, Beds (160m asl)
KevBrads1
10 February 2021 12:14:54


 


 


They're extremely hit & miss - and for here at least, most/all in the past couple of decades at least have been as disappointing as you describe, although I've got memories of a few of snowy breakdowns in the 80's and 90's.


I therefore view the GFS forecast with scepticism, more in hope than expectation. As someone whose snowfalls this spell have been pitifully small (with little prospect of that changing in the current set-up), a snowy breakdown and seeing snow pile up for 24-36 hours before the rain moves in (all per GFS) is better than a continuation of cold and predominantly dry. I appreciate those who've fared better for snow won't agree.


The worst letdown was on NYE 2000 (into 2001). Thick snow on the ground already from a few nights previous, heavily frozen. An active front coming in from the west. BBC forecasting several hours of heavy snow starting around 8-9pm as the front hits the cold air (and you always hope they're underestimating the cold block). I could almost see the headlines of thousands of NYE revellers having to spend the night in clubs and bars as snow chaos reigned. Here, it snowed for about 5 mins, another 10 or so mins of sleet, then the heavy rain set about washing away the standing snow. 


 


Originally Posted by: Saint Snow 


One of best snowy breakdowns of recent times around here was the 25th January 2013 one. Snowed heavily that Friday night, chaos on the M6 around Wigan and the snow was still on the ground until the following Saturday afternoon.


A lot of cold spells don't end with a snowy breakdown. December 2010 didn't here, the great snow of 5th/6th February 1996, that wasn't folllowed by a snowy breakdown. No snowy breakdown to the early January 1997 cold spell...


MANCHESTER SUMMER INDEX for 2021: 238
Timelapses, old weather forecasts and natural phenomena videos can be seen on this site
http://www.youtube.com/channel/UCgrSD1BwFz2feWDTydhpEhQ/playlists

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