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JACKO4EVER
27 January 2018 14:17:24


 


Impressive - but what chance. ?


Originally Posted by: Hungry Tiger 


 


That, or a version thereof I would say 5% max

tallyho_83
27 January 2018 14:23:13
So this easterly is failing then? sigh* if it doesn'#t happen now then it will never happen at least last year we had 5 days of cold weather and a brief easterly before south easterly then southerly between 9th and 14th Feb even if it was dry cold we still had cold air. But the wintry weather went into southern and central Europe not UK.
Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
---------------------------------------
Sean Moon
Magical Moon
www.magical-moon.com


Bertwhistle
27 January 2018 14:33:40

I wonder if this is one of the threshold points; the sweat on the palms of the dice-roller. 


That low would need to sink, allowing the link up of the feeble HP limb over Scandinavia, to the HP moving in from our west. The sinking of the low would allow the belt to form further north, increasing the chance of the winds south of a laterally-aligned high to reach us (easterlies). 


https://www.theweatheroutlook.com/charts/gfs/06_150_mslp850.png?cb=247


 


Bertie, Itchen Valley.
Retire while you can still press the 'retire now' button.
Deep Powder
27 January 2018 14:51:42


 


Pert 20 doesn’t hold a candle to pre-97 easterlies, it’s better than pre-97 easterly I can think of in terms of cold and longevity...  I challenge anyone to find a run where 850hap temps stay below -12c for more than a week (ok not quite a week’s worth) but looks good to stay that way for at least a day or so after t+384, perhaps a number of days.


Originally Posted by: Chiltern Blizzard 


 


February 2005 would have been close down here. Pretty sure temps at 850Hpa were -10c or below for best part of 2 weeks, at one point they reached -15, think it was around the time of a TWO meet up. It snowed for 18 days in a row, with freshly settled snow every morning, but problem was, most days contained sunny spells which melted the snow......


 


Gusty has great pics of this event!


Near Leatherhead 100masl (currently living in China since September 2019)
Loving the weather whatever it brings, snow, rain, wind, sun, heat, all great!
Bertwhistle
27 January 2018 14:56:42


 


 


February 2005 would have been close down here. Pretty sure temps at 850Hpa were -10c or below for best part of 2 weeks, at one point they reached -15, think it was around the time of a TWO meet up. It snowed for 18 days in a row, with freshly settled snow every morning, but problem was, most days contained sunny spells which melted the snow......


 


Gusty has great pics of this event!


Originally Posted by: Deep Powder 


Wetterzentrale reanalysis gives -10s on numerous days late in Feb 2005 and even as late as 6 March, but in SE England, only for as long as two days at a time. But they kept recurring.


http://www.wetterzentrale.de/reanalysis.php?uur=1800&var=2&nmaps=24&map=1&model=noaa&jaar=2005&maand=03&dag=15


 


Bertie, Itchen Valley.
Retire while you can still press the 'retire now' button.
Deep Powder
27 January 2018 15:02:40


 


Wetterzentrale reanalysis gives -10s on numerous days late in Feb 2005 and even as late as 6 March, but in SE England, only for as long as two days at a time. But they kept recurring.


http://www.wetterzentrale.de/reanalysis.php?uur=1800&var=2&nmaps=24&map=1&model=noaa&jaar=2005&maand=03&dag=15


 


Originally Posted by: Bertwhistle 


Fair enough, I think it was a case of 'rose tinted' on my part maybe.....http://www.wetterzentrale.de/reanalysis.php?jaar=2005&maand=2&dag=27&uur=1800&var=2&map=1&model=noaa


the link does show -15s knocking on the door of Kent in this spell though.....I know we definitely had snow fall on 18 consecutive days!


Near Leatherhead 100masl (currently living in China since September 2019)
Loving the weather whatever it brings, snow, rain, wind, sun, heat, all great!
Chiltern Blizzard
27 January 2018 15:08:38


 


 


February 2005 would have been close down here. Pretty sure temps at 850Hpa were -10c or below for best part of 2 weeks, at one point they reached -15, think it was around the time of a TWO meet up. It snowed for 18 days in a row, with freshly settled snow every morning, but problem was, most days contained sunny spells which melted the snow......


 


Gusty has great pics of this event!


Originally Posted by: Deep Powder 


Late Feb May have been very cold but there are never more than 2 days below -10 in a row. The best Day was 27th Feb where -15c skirted the Kent coast.  Pert 20 gives 6 days of that straight, with the prospect of a few more at the end of the run. It’s in a different league.


Rendlesham, Suffolk 20m asl
roger63
27 January 2018 15:18:04


Not so many easterlies but plenty of snow rows. The stellar run is 20, Take a look its a thing of wonder.


 


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Originally Posted by: Ally Pally Snowman 


 


 


 


Quite often it seems to be the ens from 15-20 that produce the coldest runs.If that's right then don't know why!

Hippydave
27 January 2018 15:18:43

A quick scan through of the postage stamps shows 5/6 easterly type members, albeit not all at the same time.


It's only the aforementioned P20 that goes all in, with the remaining attempts more with the UK on the periphery and a less impressive pull of cold air over us.


So still a chance of an easterly but not enough of a signal to get too excited by.


 


Home: Tunbridge Wells
Work: Tonbridge
Retron
27 January 2018 16:53:48

Hmm, GFS has gone off on one with this afternoon's run - one of those filled with sub 930 lows, which very rarely verify. Even so, heights rise to the NE briefly around day 9 - I daresay if it hadn't overblown the low thinjgs might have ended up differently.

I'd bet there are still some easterlies in the ensembles!


Leysdown, north Kent
tallyho_83
27 January 2018 17:00:53


Hmm, GFS has gone off on one with this afternoon's run - one of those filled with sub 930 lows, which very rarely verify. Even so, heights rise to the NE briefly around day 9 - I daresay if it hadn't overblown the low thinjgs might have ended up differently.

I'd bet there are still some easterlies in the ensembles!


Originally Posted by: Retron 


 


Well I thought even if it went Pete Thong' at least we would look forward to some nice dry cold crisp or frosty nights/morning first week of Feb but now look what we have more Atlantic crap - sorry but this is a 'new low' even by our standards. I thought we were on a 'high' at one point! Boom boom! Thank you drummer...! pun intended).


A 'NEW LOW' - Even by our standards:


Alaskan HP doesn't help - now the forecast looks mild and zonal followed by quieter weather for a day or two, then milder and unsettled then STORMY as seen below!!


http://www.wetterzentrale.de/topkarten.php?map=1&model=gfs&var=1&run=12&time=288&lid=OP&h=0&mv=0&tr=3#mapref



















 


 


 


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


tallyho_83
27 January 2018 17:05:28



I'd bet there are still some easterlies in the ensembles!


Originally Posted by: Retron 


Let's hope so! Soon we will be giving up in search for cold and snow! Looks like the cold air will move down into N. America once again thanks to that Alaskan Ridge! Those in the USA must be spoilt for cold and snow - the fact it's a La Nina and they keep getting the cold air from the PV. If the 12z verifies, then it would be the second time we have missed out on the cold Arctic air but the 2nd time the USA has had the cold and snow.  


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


Rob K
27 January 2018 17:18:17


Hmm, GFS has gone off on one with this afternoon's run - one of those filled with sub 930 lows, which very rarely verify. Even so, heights rise to the NE briefly around day 9 - I daresay if it hadn't overblown the low thinjgs might have ended up differently.

I'd bet there are still some easterlies in the ensembles!


Originally Posted by: Retron 


Out to 210hrs and they look rather poor. GFS seems to have decided the Atlantic jet is going to go into overdrive. 


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
Hippydave
27 January 2018 17:27:17


Hmm, GFS has gone off on one with this afternoon's run - one of those filled with sub 930 lows, which very rarely verify. Even so, heights rise to the NE briefly around day 9 - I daresay if it hadn't overblown the low thinjgs might have ended up differently.

I'd bet there are still some easterlies in the ensembles!


Originally Posted by: Retron 


Yeah seems have got a little excited with LP development on this one - it's interesting that they just get to Scandinavia and recurve back over Iceland/Greenland.


Tone that down a bit and the block to the east might build further North and we're in business. As you say I reckon there will be a few more ens that are more pleasing to the eye


Home: Tunbridge Wells
Work: Tonbridge
Retron
27 January 2018 17:54:43
Coldest set of GEFS so far - 15 is the new 20, btw!

9 runs go below -10C in London and one goes below -15C... that's the first time I've seen -15C breached in many a year.
Leysdown, north Kent
Brian Gaze
27 January 2018 18:01:16

Here is the GEFS12z update:



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
David M Porter
27 January 2018 18:02:29

Coldest set of GEFS so far - 15 is the new 20, btw!

9 runs go below -10C in London and one goes below -15C... that's the first time I've seen -15C breached in many a year.

Originally Posted by: Retron 


Couldn't be more different to the GFS 12z op run!


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
Brian Gaze
27 January 2018 18:04:55

Could fade away again very quickly but I'm starting to think an interesting winter could be intent on going out with a bang. For the sake of balance I'll quickly add that you would have to be a complete mug to bet on a full throttle easterly at the moment.


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
idj20
27 January 2018 18:13:50


Could fade away again very quickly but I'm starting to think an interesting winter could be intent on going out with a bang. For the sake of balance I'll quickly add that you would have to be a complete mug to bet on a full throttle easterly at the moment.


Originally Posted by: Brian Gaze 



In terms of full on Atlantic cyclogenesis?


Folkestone Harbour. 
Polar Low
27 January 2018 18:25:37

s/e ea 12th Jan -19th Jan 1963 I saw it  ok pretty darn close


https://www.meteociel.fr/modeles/archives/archives.php?day=12&month=1&year=1963&hour=0&type=ncep&map=2&type=ncep&region=&mode=0


 


 


 



 


Pert 20 doesn’t hold a candle to pre-97 easterlies, it’s better than pre-97 easterly I can think of in terms of cold and longevity...  I challenge anyone to find a run where 850hap temps stay below -12c for more than a week (ok not quite a week’s worth) but looks good to stay that way for at least a day or so after t+384, perhaps a number of days.


Originally Posted by: Chiltern Blizzard 

sizzle
27 January 2018 18:51:48

its all talk over netweather about being in the freezer at 168-192 until its in a reliable time frame in not buying it after last time as it all looked good in FI. in the words of MR BRIAN. dont be complete mugs.

nsrobins
27 January 2018 19:03:41
Well ECM has taken a big step in the right direction this evening. And there was I thinking this easterly was on its knees today.
Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
Whether Idle
27 January 2018 19:09:16

Well ECM has taken a big step in the right direction this evening. And there was I thinking this easterly was on its knees today.

Originally Posted by: nsrobins 


One op, one run, 8 days.


Better than a slap in the face with a wet fish, but rather too far out to get hopes up.  If its still looking cold on Feb 5th by Thursday's 12z then we might be in business.


Dover, 5m asl. Half a mile from the south coast.
Arcus
27 January 2018 19:27:10


 


One op, one run, 8 days.


Better than a slap in the face with a wet fish, but rather too far out to get hopes up.  If its still looking cold on Feb 5th by Thursday's 12z then we might be in business.


Originally Posted by: Whether Idle 


IMO ECM's 12z Op's longer term outcome has its genesis in what happens in the T+72 to T+120 period with the behaviour of that low, so I think the fate of that outcome will get decided quite quickly.


Ben,
Nr. Easingwold, North Yorkshire
30m asl
Whether Idle
27 January 2018 19:45:02


 


IMO ECM's 12z Op's longer term outcome has its genesis in what happens in the T+72 to T+120 period with the behaviour of that low, so I think the fate of that outcome will get decided quite quickly.


Originally Posted by: Arcus 


I thought someone would say that, but experience tells us that there are so many variables that have to coincide in the right way at the right time, and easterlies at this time of the year are so vanishingly rare these days, that I would say  that whilst the apparent key event is about 4 days out, that secondary factors such as the angle of any ridge Scandi ridge, and shortwaves that slow and divert the cold air reaching the east coast, will only became apparent at the sub t120 timeframe.


No, you have to wait til t96 before any confidence can be applied, and for that reason I'm firmly in the camp that says it simply will not happen.


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

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