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hobensotwo
29 January 2015 18:21:17


Looks good for my location (I hope) :-)


 


Originally Posted by: Islander 


Just too far west anything we get will be from the South East.


Looks marginal though.

Charmhills
29 January 2015 18:26:29


Nice and fairly snowy for Central and Eastern areas.


Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.
The Beast from the East
29 January 2015 18:30:12

http://www.meteociel.fr/modeles/ecmwf/runs/2015012912/ECH1-144.GIF?29-0


All the big 3 in agreement now


Question remains about whether we can build a link to the NE or if it just sinks like GFS FI


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
The Beast from the East
29 January 2015 18:36:35

Should be snowy breadown at least as cold air in entrenched. Disappointing that we arent going to see a Scandi block


http://www.meteociel.fr/modeles/ecmwf/runs/2015012912/ECH0-168.GIF?29-0


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Gooner
29 January 2015 18:37:45

http://www.meteociel.fr/modeles/ecmwf/runs/2015012912/ECH0-168.GIF?29-0


The cold sticking with us


http://www.meteociel.fr/modeles/ecmwf/runs/2015012912/ECH1-168.GIF?29-0


Reload from the NW possible??


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


roger63
29 January 2015 18:42:41


http://www.meteociel.fr/modeles/ecmwf/runs/2015012912/ECH1-144.GIF?29-0


All the big 3 in agreement now


Question remains about whether we can build a link to the NE or if it just sinks like GFS FI


 


Originally Posted by: The Beast from the East 

GEFS ENS show cold :mild ratio 


144h 80:20


192,240 and 360h 65:35.


Slight tilt towards persistence. 


 

Gooner
29 January 2015 18:46:23


Could well be back to square one very soon


 



Cold heading into the North again


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


Charmhills
29 January 2015 18:53:44


Still stubbornly cold and even wintry from the ECM 12z.


Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.
bledur
29 January 2015 18:54:30

Bledur do you think warmer weather is nailed on for sure? Other posters coming up with different scenarios ....

Originally Posted by: cultman1 


Nothing is for sure ,but those adjusted ensemble charts are good for showing trends . Tie in with Met Office at the moment :


The general cold feel to the weather will continue during the first week of February, as the northerly winds bring hail, sleet and snow showers to the country. Showers will be frequent across northern parts and may affect other coastal areas at times, with widespread overnight frost and ice too. There is a low probability of more widespread rain and snow over south-western areas, in the first couple of days. Strong northerly winds at first, with gales in places, will lead to a significant wind chill, this gradually easing. The driest and brightest weather will be across sheltered southern parts. There are signals for a change to less cold temperatures and spells of rain by next weekend, though there is still a risk of snow, frost and ice at times.


 

David M Porter
29 January 2015 18:57:59


 


Nothing is for sure ,but those adjusted ensemble charts are good for showing trends . Tie in with Met Office at the moment :


The general cold feel to the weather will continue during the first week of February, as the northerly winds bring hail, sleet and snow showers to the country. Showers will be frequent across northern parts and may affect other coastal areas at times, with widespread overnight frost and ice too. There is a low probability of more widespread rain and snow over south-western areas, in the first couple of days. Strong northerly winds at first, with gales in places, will lead to a significant wind chill, this gradually easing. The driest and brightest weather will be across sheltered southern parts. There are signals for a change to less cold temperatures and spells of rain by next weekend, though there is still a risk of snow, frost and ice at times.


 


Originally Posted by: bledur 


That's what the MetO are saying just now, but will their thoughts still be the same tomorrow and over the weekend? Who knows.


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
Whether Idle
29 January 2015 18:58:11

A lovely winter chart, this. ECM 12z 3rd Feb I will give it one of these: Could get better even...



Dover, 5m asl. Half a mile from the south coast.
John p
29 January 2015 19:15:39


Should be snowy breadown at least as cold air in entrenched. Disappointing that we arent going to see a Scandi block


http://www.meteociel.fr/modeles/ecmwf/runs/2015012912/ECH0-168.GIF?29-0


 


Originally Posted by: The Beast from the East 


You really are a miserable so and so aren't you?  Why all the sweeping statements? Far too soon to rule out a Scandinavian high.


No offence, just an observation from the last few days


;-)


Camberley, Surrey
The Beast from the East
29 January 2015 19:32:11


 


You really are a miserable so and so aren't you?  Why all the sweeping statements? Far too soon to rule out a Scandinavian high.


No offence, just an observation from the last few days


;-)


Originally Posted by: John p 



ECM does pull something out for us with trough disruption running into already in situ cold air. Not the clean easterly we all want but perhaps a messy compromise and potentially wintry


 


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
kennyboy
29 January 2015 19:34:55


 


You really are a miserable so and so aren't you?  Why all the sweeping statements? Far too soon to rule out a Scandinavian high.


No offence, just an observation from the last few days


;-)


Originally Posted by: John p 


my thoughts to. Chill out Beast!


 

Whether Idle
29 January 2015 19:43:57


Should be snowy breadown at least as cold air in entrenched. Disappointing that we arent going to see a Scandi block


http://www.meteociel.fr/modeles/ecmwf/runs/2015012912/ECH0-168.GIF?29-0


 


Originally Posted by: The Beast from the East 


Observe, Beast:



 


Dover, 5m asl. Half a mile from the south coast.
Maunder Minimum
29 January 2015 19:52:28


 


Observe, Beast:



 


Originally Posted by: Whether Idle 


A thing of beauty that - pity it is JMA.


New world order coming.
Whether Idle
29 January 2015 19:57:57


 


A thing of beauty that - pity it is JMA.


Originally Posted by: Maunder Minimum 


yes, agreed it's an outside bet but foolhardy to dismiss entirely at this range.


and the NAVGEM has some kind of Murr sausage happening...


http://www.meteociel.fr/modeles/navgeme_cartes.php?&ech=180&mode=0&carte=0


 


 


 


Dover, 5m asl. Half a mile from the south coast.
Maunder Minimum
29 January 2015 20:22:12


 


yes, agreed it's an outside bet but foolhardy to dismiss entirely at this range.


and the NAVGEM has some kind of Murr sausage happening...


http://www.meteociel.fr/modeles/navgeme_cartes.php?&ech=180&mode=0&carte=0


 


Originally Posted by: Whether Idle 


That HP looks like something else to me


Hp sauce.


New world order coming.
Rob K
29 January 2015 20:29:31


 


That HP looks like something else to me


Hp sauce.


Originally Posted by: Maunder Minimum 


Let's hope it doesn't sink.


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
Saint Snow
29 January 2015 20:33:06


 


That HP looks like something else to me


Hp sauce.


Originally Posted by: Maunder Minimum 


 



 


It actually looks like a double-sided whatever-it-is-you're-thinking-of. A before & after, if you like.




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
Gusty
29 January 2015 20:43:14

UKMO 144 is perfectly poised.


Low pressure over Italy, an Azores High forcing warm air towards Iceland and an Arctic High of 1040mb nosing SW'wards from Svalbard to form an eventual link and a spell in the freezer ? .


At this stage places like coastal Kent and Essex would be experiencing convective snowfall. 


 



Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
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Whether Idle
29 January 2015 20:57:29


UKMO 144 is perfectly poised.


Low pressure over Italy, an Azores High forcing warm air towards Iceland and an Arctic High of 1040mb nosing SW'wards from Svalbard to form an eventual link and a spell in the freezer ? .


At this stage places like coastal Kent and Essex would be experiencing convective snowfall. 


 


Originally Posted by: Gusty 


one to watch.  The outside bet JMA takes things further but I just can't see the atmosphere managing to hold a block in the right place for long enough to get a good cold feed.  


Dover, 5m asl. Half a mile from the south coast.
Stormchaser
29 January 2015 22:00:39

While there is a lot going on in the near term, inconsistency with the details makes analysis rather unreliable... so instead I have just given some thought as to what might come our way as we progress beyond week 1 of February:


 


For starters, I am increasingly suspicious that the idea of a ridge from the Atlantic linking with the Siberian High via Scandinavia has been a product of the usual GFS bias to take low heights in the NW Atlantic to the NE when actually it is more likely to progress east as per the ECM 12z op run. Such a progression is also just beginning on the UKMO 12z run at day 6.


This means we play a more complicated game, looking to the Siberian High to disrupt troughs and send low heights down through Europe. ECM manages the right sort of thing for day 8. The next trough could have behaved in a similar way but the model really blew that up into a monster... if this feature was slower and/or less intense, the outlook for days 11-12 would be more promising for us.


 


A large part of the reasoning behind my suspicions is the modeled behaviour of the stratospheric vortex; it's indicated to remain displaced to Siberia, which encourages major troughs to vacate the Greenland area.


This situation matches what we have been seeing at work to help bring about our current Euro-trough setup. This leads me to the impression that the potential is very much there for another major trough (which is what I like to call the large-scale, long-wave troughs) dropping into Europe by mid month.


BUT this can only be achieved with the help of enough amplification upstream (U.S. to western N. Atlantic). So what are the odds of getting enough amplification again this time?


Well... for the situation we have now, despite the displaced stratospheric vortex being predicted well in advance, the models originally had the jet too flat and progressive, with the major troughs over Greenland just drifting over to Siberia, the flow through the UK being generally from the west.


We then saw the models adjust to a less progressive solution and all of a sudden, the dig of low heights into Europe manifested, with the Azores High taking a hike NW.


This time around, background signals remain similar and with growing support for a more blocked result if we can manage to cycle through the sequence again, thanks in part to the consistently modeled development of a vastly stronger and more expansive Siberian High.


 


So concludes an experimental attempt to foresee the general direction of travel for a period some 14 days ahead. I can't promise that the Atlantic westerlies won't manage to find their way in for a time at least... let alone that we'll see all the blocks fall into the right places by mid-month or even at any point until the end of February. Such is the problem with long range forecasting 


 


For what it's worth... as of days 10-11 on the 12z GFS run, it was actually pretty close to following this route. It may be that adjustments away from it's 'Murr Sausage' idea toward something more like ECM's 'disrupting Icelandic troughs' idea has produced a less attractive halfway house.


The ECM  12z actually appears to be on route to the major trough ending up further east than we are seeing with the current event. Acceptable here if a long-fetch easterly was the end result... yeah I'm that greedy 


If you have any problems or queries relating to TWO you can Email [email protected]

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2023's Homeland Extremes:
T-Max: 30.2°C 9th Sep (...!) | T-Min: -7.1°C 22nd & 23rd Jan | Wettest Day: 25.9mm 2nd Nov | Ice Days: 1 (2nd Dec -1.3°C in freezing fog)
Keep Calm and Forecast On
sizzle
29 January 2015 22:05:50

thanks storm-chaser a fantastic informative detailed post and a great read as always. cheers buddy.

nsrobins
29 January 2015 22:15:25
I concede that Mondays low now looks like sliding too far SW to be if much benefit to most and this has been consistently modeled by GFS these last few days. Never mind.
The feature on Tues could contribute - just have to see.
Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO

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