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Gooner
25 January 2015 23:01:41

Modele UKMO - Carte FAX Bracknell - Pression et fronts


Fronts running down the UK in cold air


Modele UKMO - Carte FAX Bracknell - Pression et fronts


Same on Friday fronts chasing each other down the UK


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


Phil G
25 January 2015 23:01:47
GFS showing the coldest daytime temps down here at the end of the hi-res with temps not climbing above freezing. The cold spell is getting longer.
http://www.wetterzentrale.de/pics/Rtavn23417.gif 
http://www.wetterzentrale.de/pics/Rtavn24017.gif 
Gooner
25 January 2015 23:03:26


 


Isn't that produced from a model rum though?


Originally Posted by: Stormchaser 


GEFS ensembles I think - so only worth as much as they are longer range i.e. I wouldn't trade a nice sandwich for it.



I wasn't sure, so its what GFS is thinking ??


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


nsrobins
25 January 2015 23:07:11
Just a quick post-Sunday note from me.
James' analysis is excellent as usual. You could say it's a very simple set-up with huge complexities.
My attention is drawn again to the high getting up into Scandinavia - that would be the icing on the cake for the South.
Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
White Meadows
25 January 2015 23:11:46

Just a quick post-Sunday note from me.
James' analysis is excellent as usual. You could say it's a very simple set-up with huge complexities.
My attention is drawn again to the high getting up into Scandinavia - that would be the icing on the cake for the South.

Originally Posted by: nsrobins 

Yes, although unfortunately there is no evidence of this happening yet.

Phil G
25 January 2015 23:15:05
High of 1060 out to the north east, and pressure seemingly wanting to build over Scandinavia.
http://www.wetterzentrale.de/pics/Rtavn2521.gif 
Zubzero
25 January 2015 23:16:22


Not much comment on the 18z GFS?


A few winters ago a run like that would have had this place in absolute meltdown. :-) 


Originally Posted by: Joe Bloggs 


Cold and mostly dry imby


Look's good for the northweast though 


http://modeles2.meteociel.fr/modeles_gfs/runs/2015012518/108-574UK.GIF?25-18


 


The cold is not going anywhere fast once it sets in if the 18z is right


http://modeles.meteociel.fr/modeles/gfs/runs/2015012518/gfsnh-0-168.png?18

hobensotwo
25 January 2015 23:18:29


An interesting 18z GFS Op with the cold fighting to hold on beyond day 10. Clearly a northerly dominated scenario which is far from ideal for those of us south of the Channel but fascinating to watch nonetheless and the chance of snow for most on a fairly extended basis. Interesting times.


edit: very close to some serious cold in the far south in extended FI. Worth watching IMBY! ;) 


Originally Posted by: Karl Guille 


Finding it hard to get excited about this from a Channel Island point of view. As with most blasts from the north its usually just cold and wet here.


We need to get an Easterly element into it for a result down here.


 

Chiltern Blizzard
25 January 2015 23:40:27


 


I'm not that high up. About 150m here. Not sure what that is in feet


Originally Posted by: Matty H 


I'd say that's pretty high for Southern England... I would think that 95+% of the population south of B'ham live below 150m... I'm sure I might get corrected on this but I'm not aware of any significant town/city south of B'ham that's that high.


Rendlesham, Suffolk 20m asl
Karl Guille
25 January 2015 23:43:58


 


Finding it hard to get excited about this from a Channel Island point of view. As with most blasts from the north its usually just cold and wet here.


We need to get an Easterly element into it for a result down here.


 


Originally Posted by: hobensotwo 


yep, although I can recall snow showers from the north before but nothing particularly noteworthy! Worth keeping an eye on developments though as any north-easterly or easterly with 850hpa of -6 or more could deliver at this time of year. -2 or -3 850hpa can deliver from the south-east especially for you Jersey folk but it often tends to be fairly dry from that direction.


St. Sampson
Guernsey
Matty H
25 January 2015 23:52:39


 


I'd say that's pretty high for Southern England... I would think that 95+% of the population south of B'ham live below 150m... I'm sure I might get corrected on this but I'm not aware of any significant town/city south of B'ham that's that high.


Originally Posted by: Chiltern Blizzard 


Yeah, I'm miles out. A quick search shows the nearest reference point to me (Yate Rocks) is 97m - 285ft. Still better than being at sea level I guess, and probably explains why we usually do much better here than areas closer to the coast. 


Edit: miles off topic now, but on this site you can drop a marker and get your exact elevation. 


http://www.freemaptools.com/elevation-finder.htm


If this is accurate I'm at 93m - 306ft asl at least on this one the conversion is actually accurate, unlike the first one I used. 


Medlock Vale Weather
26 January 2015 00:39:57

JFF. -15/-16C windchill for us oop north might feel a tad fresh.


http://modeles2.meteociel.fr/modeles_gfs/runs/2015012518/228-290UK.GIF?25-18


 


Alan in Medlock Valley - Oldham's frost hollow. 103 metres above sea level.
What is a frost hollow? http://www.weatheronline.co.uk/reports/wxfacts/Frost-hollow.htm 
Matty H
26 January 2015 07:27:26

More from Ian:


 


@MarkAnstee2 @liamdutton Hype. We anticipate *gradual* rtn to more W'ly-bias flow circa mid nxt week; no evidence for any prolonged N'ly.


 


@MarkAnstee2 @liamdutton equally, ECMWF & UKMO models agree that (displaced) strat polar vortex moves back & rtns to more 'normal' position


Nordic Snowman
26 January 2015 07:31:55

A lack of posts is indicative of a watering down of some of the charts seen over the last few days.


Both ECM and GFS have watered down the cold and in fact bring in milder W'ly air as the Azores HP comes back into play from as early as the start of next week. The situation is clearly changing on a daily basis but I still think it has/was been blown out of all proportion - with the level-headed folk keeping perspective ;-)


EDIT: Even the good sir I.F was ramping up a bit over the weekend IMO. It's funny how 12-24 hrs can change a view point so quickly....


 


Bjorli, Norway

Website 
Andy Woodcock
26 January 2015 07:32:38
Not more change this morning although both ECM and GFS break the cold spell from Day 9, however, plenty of time for change there.

An interesting week coming up

Andy
Andy Woodcock
Penrith
Cumbria

Altitude 535 feet

"Why are the British so worried about climate change? Any change to their climate can only be an improvement" John Daley 2001
Matty H
26 January 2015 07:33:10

Thought it was quiet in here. Just looked at the GFS and ECM. 


To me they look poor for southerners in terms of snow. Yesterday's GFS theme to back more westerly - cold westerly - is replicated on the ECM as well overnight. 


Robertski
26 January 2015 07:34:21


 


I'd say that's pretty high for Southern England... I would think that 95+% of the population south of B'ham live below 150m... I'm sure I might get corrected on this but I'm not aware of any significant town/city south of B'ham that's that high.


Originally Posted by: Chiltern Blizzard 


I'm in in High Wycombe at 206mtrs. The Chilterns are a favourable spot for snow in marginal situations, I am watching the models with interest as it is the precipitation amounts that will be key I'm by. 

nsrobins
26 January 2015 07:54:12

There hasn't been any major shift in the outlook as far as I can see, but then general lowland snowfall was not high on my risk list.
Let's say there's been a slight widening in solutions looking at the London 850hPa groupings, with the GFS OP in the -5 to -6 group until next Tues, but plenty of others down to -7 or -8.
I am not discussing next Tues onwards - that will only get you confused.
Also, there has been no 'hype' here or excessive ramping so how can anyone be disappointed that the charts show pretty much what they have shown these last three days?
I think the GFS ppn type charts probably don't help the situation as they tend to be inaccurate beyond 48hrs. I think I might start posting excessive charts showing copious rain to balance things up a bit


Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
doctormog
26 January 2015 07:55:42
To be honest there is not much of a change this morning, it is just that the breakdown hinted at on yesterday's charts at day 10 is on today's charts at day 9! Before then it is a messy, and after the next few days a chilly, picture with the chance of wintry precipitation. Initially later on Wednesday and Thirsday in some areas (especially NWern parts) then rather marginal on Friday but cooler again for the 3 or 4 days after that. Re. snow prospects - Whether it is cold enough or there is precipitation is hard to call at this stage. It actually looks a little less marginal in places than it did a couple of days ago.

Then after all that, the breakdown is shown.
Weathermac
26 January 2015 07:59:57
A northerly rarely gives us snow in Warwickshire we are sheltered by the Peak District so just cold sunny days for me . Some places down the east and west coast could do well .
Maunder Minimum
26 January 2015 08:00:03

To be honest there is not much of a change this morning, it is just that the breakdown hinted at on yesterday's charts at day 10 is on today's charts at day 9! Before then it is a messy, and after the next few days a chilly, picture with the chance of wintry precipitation. Initially later on Wednesday and Thirsday in some areas (especially NWern parts) then rather marginal on Friday but cooler again for the 3 or 4 days after that. Re. snow prospects - Whether it is cold enough or there is precipitation is hard to call at this stage. It actually looks a little less marginal in places than it did a couple of days ago.

Then after all that, the breakdown is shown.

Originally Posted by: doctormog 


The Express has thrown a spanner in the works yet again!  ;-)


 


New world order coming.
Gooner
26 January 2015 08:06:00


A lack of posts is indicative of a watering down of some of the charts seen over the last few days.


Both ECM and GFS have watered down the cold and in fact bring in milder W'ly air as the Azores HP comes back into play from as early as the start of next week. The situation is clearly changing on a daily basis but I still think it has/was been blown out of all proportion - with the level-headed folk keeping perspective ;-)


EDIT: Even the good sir I.F was ramping up a bit over the weekend IMO. It's funny how 12-24 hrs can change a view point so quickly....


 


Originally Posted by: Nordic Snowman 


More realistically because its Monday morning Mike



The GFS control is hinting at a bit of a 'slider', similar to ECM


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


nsrobins
26 January 2015 08:15:16


 


The Express has thrown a spanner in the works yet again!  ;-)


 


Originally Posted by: Maunder Minimum 


Please don't mention that piece of crap like their opinion mattered. I am incredulous anyone in this country takes the slightest bit of notice to the garbage they spout, and to suggest they influence anyone with even a basic understanding of the weather and how it works is an insult.


IMO of course


Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
Ally Pally Snowman
26 January 2015 08:22:14

No need to be pessimistic this morning a very good ecm and ukmo. Not so good GFS but why would an American model be better at forecasting the weather in the UK than a european and british one it wouldn't!


plenty of snow opportunities below cold air hangs on in the east until day 10


http://www.wetterzentrale.de/pics/Recm722.html


http://www.wetterzentrale.de/pics/Recm962.html


http://www.wetterzentrale.de/pics/Recm1202.html


http://www.wetterzentrale.de/pics/Recm1442.html


http://www.wetterzentrale.de/pics/Recm1682.html


http://www.wetterzentrale.de/pics/Recm1922.html


http://www.wetterzentrale.de/pics/Recm2402.html


 


Bishop's Stortford 85m ASL.
Retron
26 January 2015 08:26:25

Big changes afoot in the ECM ensembles today...



Leysdown, north Kent

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