roger63
Friday, February 3, 2017 5:00:06 PM

Well three op runs now.All that can be said about the GFs op is that hope ENS paint a more cheerful picture  than a 70 hour cold spell.METO and GFS similar at 144h. GEMstand out with earlier onset and better orientation of HP



 

Whether Idle
Friday, February 3, 2017 5:01:13 PM

 


Meanwhile, Arpege suggests a cool outlook for Wednesday:



Dover, 5m asl. Half a mile from the south coast.
doctormog
Friday, February 3, 2017 5:02:14 PM

Originally Posted by: tallyho_83 


 


It looks slack and it's only a two day event . - Well looking at the 12z gfs.



Your second sentence highlights the problem with your analysis. The GFS 12z op run is one option, the GEM another and the UKMO a third.


Whether Idle
Friday, February 3, 2017 5:04:28 PM

 

Originally Posted by: Justin W 

The UKMet op at +144 looks terrific to me with the Scandinavian HP being reinforced by the legion of the north. Can't see what all the gloom is about


I realise we are  commenting here on FI - which is clearly somewhere at the t72-96 juncture, but the UKMO and GEM are not dissimilar at 144 synoptically, albeit the GEM is a fierce beast of cold, and the UKMO is merely cold, thanks to the differing origin of upper air over the UK at the time.


Dover, 5m asl. Half a mile from the south coast.
John p
Friday, February 3, 2017 5:04:33 PM

Originally Posted by: tallyho_83 


 


It looks slack and it's only a two day event . - Well looking at the 12z gfs.



That makes no sense.


Why are you slating the UKMO run by using the GFS?


Camberley, Surrey
Maunder Minimum
Friday, February 3, 2017 5:05:48 PM

Originally Posted by: Justin W 

The UKMet op at +144 looks terrific to me with the Scandinavian HP being reinforced by the legion of the north. Can't see what all the gloom is about


Yes a stellar chart - a real beauty when looked at from a hemispheric point of view:


UKMO


New world order coming.
Joe Bloggs
Friday, February 3, 2017 5:08:06 PM

I've stayed out of the discussion so far.. but with charts like this at T+96 I'd urge major, major caution...


http://old.wetterzentrale.de/pics/Rukm961.gif


http://old.wetterzentrale.de/pics/Rtavn961.gif


I've always found T+96 as the 'safe zone'... if we get a screaming easterly with -10C uppers at this range there is only a very slim chance of big downgrades, but until then I'd still expect major flux.


Reasons to be cautiously optimistic, but I wouldn't dust down the sledge just yet.



Manchester City Centre, 31m ASL

The Beast from the East
Friday, February 3, 2017 5:09:27 PM

http://modeles7.meteociel.fr/modeles/gens/runs/2017020312/gens-0-1-150.png


Control looks better. So far...


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Whether Idle
Friday, February 3, 2017 5:09:50 PM

The Brasilian model (0z) never gets the cold air in at all: One for the mild-lovers.



Dover, 5m asl. Half a mile from the south coast.
The Beast from the East
Friday, February 3, 2017 5:11:41 PM

NE America severe cold,


http://modeles7.meteociel.fr/modeles/gens/runs/2017020312/gensnh-0-0-168.png


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Gandalf The White
Friday, February 3, 2017 5:22:10 PM

Originally Posted by: Arcus 


 


"Ecart Type" is standard deviation.



Thanks; I've learned something.



Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


LA2B MeridFlowEuro09
Friday, February 3, 2017 5:27:48 PM

Originally Posted by: Justin W 

The UKMet op at +144 looks terrific to me with the Scandinavian HP being reinforced by the legion of the north. Can't see what all the gloom is about


And here goes my contribution!!.


The GFS, and UKMO and ECMWF have basically downgraded at the 144hrs, and a just 72 hour whiff Wednesday night through to Saturday morning it brings in cold air but then they have been affected by less cold 500hPa heights though 2m and the 850's should during that time be on the cold side but it loolks dryish to me.


On Either Thursday or Friday and early on or during all we can carry on with a bit of wishful thinking but the Atlantic North has actually pushed it out from Wednesday 8th...


Not much confidence on GFS, though UKMO maybe on to something but this evening ECMWF still we await, good 12z GEM at 144 but it naturally follows GFS in time๐Ÿ™‚๐Ÿ˜‚.


Update~>. The Thursday to Saturday SE tracking Low to Spain is a corker the big Q is will there be any significant précis along the low level continental SE flow that is forced by the NE Europe High over it?.


Climate is warming up, Scotland and N Ireland and North England still often gets some Winter frost, ice and snow, November to March, but the SE and South UK including S Central England and Wales, together with the West and North through the year, they sometimes get more rain than London and S SE England, where some longer dry fine spells without much heavy rain is seen every year.

The North Atlantic Sea often gets some much Colder Wintry conditions from November to March Months, and Mild SW and South winds tend to be more frequent over the East and SE of North Atlantic Sea, as the Azores High tends to stay in charge.ย 

With this warmth and heat, the Central and South UK has become mostly free of snow and frost.
The Beast from the East
Friday, February 3, 2017 5:39:29 PM

GEFS are an upgrade up to day 9 anyway


Control keeps the block close by and brings it back in deep FI


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
nickl
Friday, February 3, 2017 5:42:30 PM

Originally Posted by: The Beast from the East 


GEFS are an upgrade up to day 9 anyway


Control keeps the block close by and brings it back in deep FI



they are?  the mean jet is back sw/ne as opposed to the 06z suite which had it diving to iberia

doctormog
Friday, February 3, 2017 5:44:16 PM

Originally Posted by: The Beast from the East 


GEFS are an upgrade up to day 9 anyway


Control keeps the block close by and brings it back in deep FI



They look broadly similiar to the 06z suite. My advice? Don't get suckered in... 


Karl Guille
Friday, February 3, 2017 5:46:19 PM
CMA looking good out to 156 will low pressure undercutting the high and low 850hPA about to flood into the UK.
http://modeles.meteociel.fr/modeles/cma/runs/2017020312/cma-0-156.png?12 
http://modeles.meteociel.fr/modeles/cma/runs/2017020312/cma-1-156.png?12 
St. Sampson
Guernsey
The Beast from the East
Friday, February 3, 2017 5:49:15 PM

http://modeles7.meteociel.fr/modeles/gens/runs/2017020312/gensnh-10-1-360.png


would be fun


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Rob K
Friday, February 3, 2017 5:50:28 PM
http://old.wetterzentrale.de/pics/MT8_London_ens.png 
Definite dialling back of the cold there.

I'm not sure about the negative comments on the 12Z UKMO 144 though because to my eye it is one of the best UKMO charts we've seen for a long while.

http://old.wetterzentrale.de/pics/Rukm1441.gif 

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." โ€” Jerome K. Jerome
Whether Idle
Friday, February 3, 2017 5:57:34 PM

Originally Posted by: Karl Guille 

CMA looking good out to 156 will low pressure undercutting the high and low 850hPA about to flood into the UK.
http://modeles.meteociel.fr/modeles/cma/runs/2017020312/cma-0-156.png?12
http://modeles.meteociel.fr/modeles/cma/runs/2017020312/cma-1-156.png?12


I regard the CMA quite highly...FWIW Here it pummels England with a bitter blast in FI:



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