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Chiltern Blizzard
11 January 2016 19:49:52


Some charts look a bit misleading Brian but that looks cold enough to me for E/A and S/E even at low levels








 


 


 


 


 


 


Originally Posted by: Polar Low 


depends on what you class as 'low ground in the south'.. Imby for instance (500 ft asl isn't exactly high ground) there's a much higher chance than, say, in Bournemouth.... 


Rendlesham, Suffolk 20m asl
Shropshire
11 January 2016 19:59:07

ECM and GFS both sending the Atlantic energy North this leading to some very mild charts later on.


 


I would think that the ECM OP will be at the mildest end of its ensembles by day 10, but the fact that both of the big two show the descent to mild zonality from day 6/7 onwards has to be a worry.


From December 27th 2020, zonality will be banned from mixing with the UK. We appreciate that this may come as a shock to younger people and old Uncle Barty. This ban will last for a minimum of ten days.
Bertwhistle
11 January 2016 20:01:15


ECM and GFS both sending the Atlantic energy North this leading to some very mild charts later on.


 


I would think that the ECM OP will be at the mildest end of its ensembles by day 10, but the fact that both of the big two show the descent to mild zonality from day 6/7 onwards has to be a worry.


Originally Posted by: Shropshire 


Always a worry, Shropshire; never a gloat. And as those of greater faith have shown of late, never a given.


Bertie, Itchen Valley.
Retire while you can still press the 'retire now' button.
Chiltern Blizzard
11 January 2016 20:04:30


Yes, game over by next Monday with the ECM - return of SW winds looks nailed on for next week now.


Does not look like a very decent or prolonged cold snap unfortunately - perhaps the terrible Countryfile forecast was not that far away from the way things will turn out,


Originally Posted by: Maunder Minimum 


Nailed on?? Next week is about as nailed on as jelly would be to a spinning waltzer... With no nails.


Rendlesham, Suffolk 20m asl
Whether Idle
11 January 2016 20:15:08


 


The BBC, the Met Office and the ECM and UKMO models? Yes it may be hit and miss and marginal in places but the potential is there.


Originally Posted by: doctormog 


As a model watcher I perceive its only ever been a massive outside bet, shown on rogue runs.  The consensus has been to keep the cold limited and thus very marginal.  Talk of snow at a distance of 3 days in lowland southern Britain is frankly froth and bubble and doomed to inaccuracy....make that at 24 hours.


Lets get real.  I talked about "touting" of it, ie strongly worded forecasts expressing confidence in an outcome.  That simply has not happened.


Dover, 5m asl. Half a mile from the south coast.
SnowyHythe(Kent)
11 January 2016 20:20:08

I concur completely with your sentiments WI. However, it would not take much for the output to push the positive anomolies to our east a little further north in a weeks time. It will be interesting to see where the ECM Op sits in the ensemble suite..

Gusty
11 January 2016 20:21:23

Uncertain times continue. The form horse is for an atlantic return next week, however, the UKMO 144 hours has other ideas currently and offers a potential easterly not too far down the line.



Tomorrow morning 0z UKMO will be crucial IMO..a collapse of the block SE'wards in any way shape or form will 'probably' signal the ongoing background trend to spell the end of the current cold spell being modelled by most other credible NWP. We shall see. 


 


Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
https://www.wunderground.com/dashboard/pws/IFOLKE11 
Join Kent Weather on Facebook.
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Whether Idle
11 January 2016 20:23:51


I concur completely with your sentiments WI. However, it would not take much for the output to push the positive anomolies to our east a little further north in a weeks time. It will be interesting to see where the ECM Op sits in the ensemble suite..


Originally Posted by: SnowyHythe(Kent) 


Thanks SH.


At the moment its all a bit underwhelming IMBY on the micro level but I'm finding the model wars fascinating on the macro level.  The low levels of confidence are fun.  You are right about the possibility, but again, an outside bet with very low confidence at the moment.


Dover, 5m asl. Half a mile from the south coast.
SnowyHythe(Kent)
11 January 2016 20:24:29


Uncertain times continue. The form horse is for an atlantic return next week, however, the UKMO 144 hours has other ideas currently and offers a potential easterly not too far down the line.



Tomorrow morning 0z UKMO will be crucial IMO..a collapse of the block SE'wards in any way shape or form will 'probably' signal the ongoing background trend to spell the end of the current cold spell being modelled by most other credible NWP. We shall see. 


 


Originally Posted by: Gusty 


 


Just like old times...SE Massive posting in a threesome!

Polar Low
11 January 2016 20:24:47

If you look at that Phil no mild sector on that small low(T) as it crosses already in cold air with colder air behind as it clears east coast


think its still up for grabs imho


 





 


 


 



 


As a model watcher I perceive its only ever been a massive outside bet, shown on rogue runs.  The consensus has been to keep the cold limited and thus very marginal.  Talk of snow at a distance of 3 days in lowland southern Britain is frankly froth and bubble and doomed to inaccuracy....make that at 24 hours.


Lets get real.  I talked about "touting" of it, ie strongly worded forecasts expressing confidence in an outcome.  That simply has not happened.


Originally Posted by: Whether Idle 

Maunder Minimum
11 January 2016 20:24:56

It was ever thus for UK model watchers - we worry about the end of a cold spell (with good reason I might add) before it has even got started.


It is the tragedy of our location.


New world order coming.
Bertwhistle
11 January 2016 20:25:21


I concur completely with your sentiments WI. However, it would not take much for the output to push the positive anomolies to our east a little further north in a weeks time. It will be interesting to see where the ECM Op sits in the ensemble suite..


Originally Posted by: SnowyHythe(Kent) 


I don't.


https://www.youtube.com/watch?v=WhPZYHkoftc


 


Bertie, Itchen Valley.
Retire while you can still press the 'retire now' button.
SnowyHythe(Kent)
11 January 2016 20:30:23
Evening, Bert..
One thing lacking at present is a strong established Scandi High for there to be much fun and games like that clip you have shared..

Plenty of time for a battle ground like that to occur...but not in the next 5-7 days..
Arcus
11 January 2016 20:31:58
ECM 12z ensembles for my neck of the woods show below average for the Op run for the 850s for days 4 to 7, then the Op goes to the mildest end of the runs for days 8 to 10.
Ben,
Nr. Easingwold, North Yorkshire
30m asl
SnowyHythe(Kent)
11 January 2016 20:33:17

http://www.meteociel.com/modeles/ecmwf/runs/2016011112/EDM1-120.GIF

There is enough in that mean chart to keep me interested post next weekend..


For the next 12 -24 hours at least..

Arcus
11 January 2016 20:36:07
... but definitely a milder set of runs than the 00z in the 7 to 10 day period for ECM.
Ben,
Nr. Easingwold, North Yorkshire
30m asl
Whether Idle
11 January 2016 20:37:04


 


I don't.


 


 


Originally Posted by: Bertwhistle 


Back to 2016...Here's the latest Bert:


Philip Avery on BBC London news - said snow "perhaps" on the very tops of hills in the northern Home Counties Thursday morning.:


low  confidence


 


 


Dover, 5m asl. Half a mile from the south coast.
Chiltern Blizzard
11 January 2016 20:37:59


If you look at that Phil no mild sector on that small low(T) as it crosses already in cold air with colder air behind as it clears east coast


think its still up for grabs imho 


 


Originally Posted by: Polar Low 


it all depends where you are... I totally understand frustration of South Coast contingent for instance.... Even given the chart posted, the coming week doesn't show anything that's going to be 'exciting' from their perspective. 


Rendlesham, Suffolk 20m asl
Schnow in Peace
11 January 2016 20:38:38

Even if energy does go North as per ECM and GFS, that is how the current pattern change began. The polar vortex is now much more fragmented than previously and so a repeat perhaps sooner rather than later would seem likely. This would also be supported by the latest GLOSEA update. 


Of course were the UKMO 144 to verify then there are yet other options

Whether Idle
11 January 2016 20:40:36

Meanwhile ECM ens for deBilt... Op pretty much mildest on Saturday



Dover, 5m asl. Half a mile from the south coast.
Andy Woodcock
11 January 2016 20:43:42
Not sure why some people think the MetO run would lead to an easterly beyond 168, the high could just as likely sink which is exactly what it does on the ECM run.

Much milder next week is by far the most likely outcome as the PV sits back on it's Greenland Throne and our cold UK a High becomes a mild Euro Slug.

Still plenty of time for some cold weather, I just don't think it will be in a January.

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
Gusty
11 January 2016 20:47:22

Based on the output we have seen over the last few days I think it would be foolish to discount the possibility of snow, no matter how small the risk. For all we know that small channel low feature that has been picked up and dropped a few times by the UKMO, GFS and ECM could suddenly re-appear providing a very different picture on Thurs/ Fri ?


Here is the Met Office fax chart.


Sub 524 dam air, convective troughs, weak disturbances, light winds..January...potential.



Discounting the options post 48 hours is perhaps a little premature at this stage. 


Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
https://www.wunderground.com/dashboard/pws/IFOLKE11 
Join Kent Weather on Facebook.
https://www.facebook.com/stevewall69/ 



doctormog
11 January 2016 20:49:41


 


As a model watcher I perceive its only ever been a massive outside bet, shown on rogue runs.  The consensus has been to keep the cold limited and thus very marginal.  Talk of snow at a distance of 3 days in lowland southern Britain is frankly froth and bubble and doomed to inaccuracy....make that at 24 hours.


Originally Posted by: Whether Idle 


Personally I would call the sub 520dam 500-1000hPa thicknesses shown for the south on current GFS and UKMO output would be described as cold but I guess others have other criteria. I think that the cold is there and e precipitation - just possibly not at the same time, or in the south at least. Details and confidence at this range would have to be very limited. As for snow in the south, I wouldn't rule it out even at lower levels at times (as suggested by the Met Office) but I certainly would not forecast it with any confidence or high probability yet.


Edit: I agree Steve. 


Gusty
11 January 2016 21:05:26


Meanwhile ECM ens for deBilt... Op pretty much mildest on Saturday



Originally Posted by: Whether Idle 


Very interesting ensembles Phil. 40% chance of going into the freezer courtesy of an easterly there. 


Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
https://www.wunderground.com/dashboard/pws/IFOLKE11 
Join Kent Weather on Facebook.
https://www.facebook.com/stevewall69/ 



Whether Idle
11 January 2016 21:11:53


 


Very interesting ensembles Phil. 40% chance of going into the freezer courtesy of an easterly there. 


Originally Posted by: Gusty 


Yes Steve, its a possibility. 


 


Snow in the south on Thursday/ Friday is a possibility (IMHO a very low one), tomorrow may shed a little more clarity on an unclear picture.


Those forecasting the return of the slug may find the models tomorrow deliver some blue pellets.


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

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