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Brian Gaze
11 February 2021 22:31:58

Amazing chart.



Brian Gaze
Berkhamsted
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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan
Gooner
11 February 2021 22:49:49

No point in hiding the fact , it is all over .


It seems for many , the promise of gold was false , such fantastic synoptics that gave very little if we are honest.( Eastern boys and girls will beg to differ ) 


At least we had the January snow , sadly we had no cold to keep it here MBY 


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


tallyho_83
12 February 2021 00:45:09


No point in hiding the fact , it is all over .


It seems for many , the promise of gold was false , such fantastic synoptics that gave very little if we are honest.( Eastern boys and girls will beg to differ ) 


At least we had the January snow , sadly we had no cold to keep it here MBY 


Originally Posted by: Gooner 


I agree - I know this isn't the moaning thread but it is all over. Yes those in the far SE like Kent and the NE of Scotland in particular are fed up of cold and snow but for many this easterly never really delivered did it?


I will do an analysis at some point. 


This is/was the Temp anomaly for February by the CFSv2:



 


Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
---------------------------------------
Sean Moon
Magical Moon
www.magical-moon.com


western100
12 February 2021 06:00:16


 


I agree - I know this isn't the moaning thread but it is all over. Yes those in the far SE like Kent and the NE of Scotland in particular are fed up of cold and snow but for many this easterly never really delivered did it?


I will do an analysis at some point. 


This is/was the Temp anomaly for February by the CFSv2:



 


Originally Posted by: tallyho_83 


It depends how you look at it?


The easterly delivered the coldest UK temperature since 1995 so it’s hard to say it didn’t deliver? It didn’t deliver widespread snow but not many events do?


I have snow on the ground today from Monday. Nothing extreme but it’s delivered so far a cold month. 

That chart has materialised so far pretty well? February may end up below average?


Worcestershire / Warwickshire Border
100m ASL
Twitter…..@Weather4u2
Whether Idle
12 February 2021 07:11:32

After something of a warm up relative to the current frigidity, ECM in deepest FI is poised with this at 240:


https://www.meteociel.fr/modeles/ecmwf.php?ech=240&mode=1&map=1&type=0&archive=0


Other runs will offer alternatives no doubt


Dover, 5m asl. Half a mile from the south coast.
DEW
  • DEW
  • Advanced Member
12 February 2021 07:27:45

Looking ahead rather than crying over spilt milk ...


http://www.wxmaps.org/pix/temp4 has all the cold weather heading for SE Europe and the Black Sea, with the associated pptn map suggesting heavy snowfalls in a band from Italy to Greece to Turkey.


GFS much as yesterday with UK sandwiched between Atlantic LP and Scandia HP. and thus a S-ly flow to Fri 19th ( the HP is weaker than yesterday so occasional troughs moving N and wind direction inclined to be S/SW more than S/SE). Large HP then rocks up over the UK, 1040mb by Mon 22nd, moving first to the N by Thu 25th ( a brief E-ly blast) and then to the W Sun 28th (slack pressure, previous ideas of a N-ly now very weak)


GEfS after this w/e, a spell of normal temps to Fri 19th after which most runs mild to end of run Sun 28th but an increasing proportion incl op run  trending cooler towards the end. Dry ( a bit more rain in the W at first), not to say bone dry after the 19th. 


ECM shows more Atlantic influence at first, with a more marked trough over the NW Wed 17th, and again later with the HP centred over Norway Mon 22nd and weaker at 1030mb


War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl
marco 79
12 February 2021 07:52:19
Midnight GEFS generally trending colder from 25th..
Home : Mid Leicestershire ...135m ASL
Brian Gaze
12 February 2021 08:05:25

ECM and ECMP show how small differences can make a big difference to the UK's weather.



 



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
marcus72
12 February 2021 08:11:00


ECM and ECMP show how small differences can make a big difference to the UK's weather.



 



Originally Posted by: Brian Gaze 


 


Isn't our weather a lot more interesting when it comes from the other direction?!   No one knows what we're going to get ! Other than generally being quite dry..... which makes a refreshing change. 


Langstone, SE Hampshire
Hippydave
12 February 2021 08:37:09

The signal for HP to build somewhere in the vicinity a few days after our breakdown remain strong this morning I see. 


Still too far out for any great confidence on where this will be although somewhere just to out South or South east seems favoured initially with an interesting signal for the HP to move Northwards after that.


As flagged the ECM 240 chart may be dragging in some warm uppers but play it on a touch and I expect it'd be a bit different. 


ECM ens show some colder runs at points although not until the end of the run a more consistent cooling signal is seen. (Interpreted without seeing the clusters which I imagine would tell a better story!).


GEFS are generally mild, certainly at 850 level although a few hints at some cooler stuff appearing in the mid term and towards the end of the run.


GEM op completes the HP dominated theme, with HP building from the South giving us a strong UK HP by T240, which is still shaping to build North. 


Given the time of year the differences between mild and dry and cold and dry are pretty minimal so a bit early to call an early spring or return to cold IMO. What wouldn't surprise me is a few springlike days as the HP builds in before a gradual cool down as it moves far enough North to drag in some cooler continental air again.


Home: Tunbridge Wells
Work: Tonbridge
David M Porter
12 February 2021 08:38:22

From what I can see, the atlantic looks to be making something of a comeback next week but it looks at the moment to be a case of it only making it so far until it possibly is forced to retreat again by the HP block to the east which looks to be reinforcing in strength a week or so from now.


The Met Office extended forecast from yesterday seemed to suggest that HP would possibly return during the weekend of Sat 20th/Sun 21st Feb which fits it quite well with a lot of the op runs at the moment. We shall see what transpires.


Lenzie, Glasgow

"Let us not take ourselves too seriously. None of us has a monopoly on wisdom, and we must always be ready to listen and respect other points of view."- Queen Elizabeth II 1926-2022
The Beast from the East
12 February 2021 09:18:45

A few Quantum runs there in the ensembles. some that never warm up in the SE corner. We will end up with some sort of block to the east, whether its springlike or winter still to be decided


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Ally Pally Snowman
12 February 2021 09:36:04

Probably Spring but outside chance of winter continuing.  I don't mind as long as we get one or the other. We dont want a boring halfway house. 



 


Bishop's Stortford 85m ASL.
Rob K
12 February 2021 09:43:51
It's amazing how close the ECM and ECMP runs have been almost every time, when the GFSP is often the polar opposite to the GFS.
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
Scandy 1050 MB
12 February 2021 09:53:16


Probably Spring but outside chance of winter continuing.  I don't mind as long as we get one or the other. We dont want a boring halfway house. 



 


Originally Posted by: Ally Pally Snowman 


Whatever happens certainly will not be as boring as last winter which was dull from start to finish and more like permanent Autumn, I think a taste of spring the most likely outcome this morning but always the risk of a return to something colder as we move towards the end of February.

GezM
  • GezM
  • Advanced Member
12 February 2021 10:29:38


The signal for HP to build somewhere in the vicinity a few days after our breakdown remain strong this morning I see. 


Originally Posted by: Hippydave 


That'll do me. I don't really care if it's mild or cold as long as it's dry (after the rain next week of course). I just couldn't stand a return to weeks of cold or warm rain. 


Living in St Albans, Herts (116m asl)
Working at Luton Airport, Beds (160m asl)
Brian Gaze
12 February 2021 10:32:30

GFS again firing up the temperatures. It may even be possible to sit outside down here.  



 


 


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
four
  • four
  • Advanced Member
12 February 2021 10:34:38
Reminds me of 2019 which had several days in late Feb over 15C, despite a snowy start.
hobensotwo
12 February 2021 10:35:56


Probably Spring but outside chance of winter continuing.  I don't mind as long as we get one or the other. We dont want a boring halfway house. 



 


Originally Posted by: Ally Pally Snowman 


A couple of big dippers towards the end, which might be the start of a trend. It will be interesting to see if this carries weight into the 12z's.


I've got a feeling we haven't seen the end of winter yet.


It's been the longest winter period that I can remember without much of a zonal push, a very -AO/NAO winter.

Brian Gaze
12 February 2021 10:39:52

Detailed ECMP verification information is available here:


https://sites.ecmwf.int/ifs/scorecards/scorecards-47r2HRES.html


Red means the new version is worse than the control (I assume to be the existing operational). Blue means it is better.


It appears they've actually reduced from 64but to 32bit floating point numbers in the new version to free up computational power which provides for an increase in the number of levels (91 to 137) in the ensemble forecasts.


The new version is scheduled for 11th May and is now fully plugged into TWO here:


https://www.theweatheroutlook.com/twodata/ecmwfp.aspx


 


 


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
Quantum
12 February 2021 10:43:34

I'd expect all outliers to be completely gone on the 12z. There is still an outside chance as the trough had not yet developed at 6Z.


There is no chance of keeping cold if the 12Z is on board for mild though.


 


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.
ballamar
12 February 2021 10:46:26
Hints of an easterly akin to 2018 in the output. Was hoping for spring but if it can give a decent snow event....
Ally Pally Snowman
12 February 2021 10:48:11

Hints of an easterly akin to 2018 in the output. Was hoping for spring but if it can give a decent snow event....

Originally Posted by: ballamar 


Yes hints of Spring and then perhaps another Beast. The GFS 6z a carbon copy of the met office long range forecast. 


 


https://www.wetterzentrale.de/en/topkarten.php?map=1&model=gfs&var=1&time=300&run=6&lid=OP&h=0&tr=3&mv=0#mapref


 


Bishop's Stortford 85m ASL.
The Beast from the East
12 February 2021 10:48:50


I'd expect all outliers to be completely gone on the 12z. There is still an outside chance as the trough had not yet developed at 6Z.


There is no chance of keeping cold if the 12Z is on board for mild though.


 


Originally Posted by: Quantum 


A few good ones still there. Dont give up just yet!



"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Whether Idle
12 February 2021 10:50:15

Hints of an easterly akin to 2018 in the output. Was hoping for spring but if it can give a decent snow event....

Originally Posted by: ballamar 


My appetite has been wetted.  Even the GFS now throwing an FI operational run out that takes us back into Beasterly Cold.


https://www.meteociel.fr/modeles/gfse_cartes.php?ech=312&code=code&mode=1&mode3h=0&runpara=0&carte=1


 


Dover, 5m asl. Half a mile from the south coast.

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