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Gusty
28 January 2020 07:44:26

Yes, the models are firming up on a northerly of sorts next week ahead of a toppler. Some sunshine and frost would be welcomed. 


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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JACKO4EVER
28 January 2020 09:47:19
Yes the form horse would be for any Northerly to be quickly shunted east, followed by a day or two of overnight frost (perhaps better than today’s attempt at winter which hasn’t even delivered a frost here).
Tim A
28 January 2020 11:49:25
Some encouraging signs for a cold plunge but GFS always seems to exaggerate and signs of a roaring NE flow normally end up being more NNW.
Tim
NW Leeds
187m asl

 My PWS 
fairweather
28 January 2020 12:00:19

From the ensembles it all appears clear cut. February will either be very mild or very cold 


S.Essex, 42m ASL
IanT
  • IanT
  • Advanced Member
28 January 2020 12:13:42


From the ensembles it all appears clear cut. February will either be very mild or very cold 


Originally Posted by: fairweather 


 


On average, February will be average 


Woking, Surrey. 40m asl.
Arbroath 1320
28 January 2020 15:09:01

Yes the form horse would be for any Northerly to be quickly shunted east, followed by a day or two of overnight frost (perhaps better than today’s attempt at winter which hasn’t even delivered a frost here).

Originally Posted by: JACKO4EVER 


The trouble is that we cannot get any sustained pressure rise over Greenland. Even on the 6z it's here today and gone tomorrow.


The models may flip flop over the next few days, but history tells us that this is looking like a day or 2 of cold Northerlies followed by a toppler, and then back to our default Azores high


GGTTH
Russwirral
28 January 2020 16:27:29

I would say so far that 12z gfs run looks better.  Better reach northwards, and more of a scandi high about it.  More runs needed, but at least im not seeing immediate sinkage into a Euro high....


 


So far so good.


Russwirral
28 January 2020 16:30:25

Europe finally steps into the chiller.....2 months later than scheduled.


 


Netweather GFS Image


Rob K
28 January 2020 16:38:03

The GFS trend over the last day or two seems to have been for HP to set up further and further north next week, to the extent that on the 12Z we're almost getting a proper Scandi high-based easterly. Pressure is still high over the Azores and low over Greenland, though, so it doesn't look like a long-lasting or stable cold pattern at all.


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
ballamar
28 January 2020 16:48:34
Second attempt at building the Scandi high after the first
Russwirral
28 January 2020 17:05:05

Widespread snow fall on this run too on the 10th as fronts collide into an established cold block.

Probably the best run of the winter so far by a long shot.


doctormog
28 January 2020 17:06:30
The “toppler” discussion is one that baffles me, not because it’s an unlikely scenario this time but rather that it is discussed as being a normal regular occurrence in recent years. Even a “decent northerly toppler” (never mind an Arctic northerly plunge) has been totally lacking in recent years. Perhaps this one will transpire but I will believe it if it is still shown in a few days time.
Arcus
28 January 2020 17:19:57
GEM and ICON 12z are far from keen on any northerly incursion, with GFS' WAA low ploughing across the Atlantic instead.
Ben,
Nr. Easingwold, North Yorkshire
30m asl
tallyho_83
28 January 2020 17:36:17

Looking at strength of zonal winds @ 10hap - a few days ago all 4 CFS models were going for a reversal of zonal winds and now all 4 are going for a weakening before strengthening again:



Looking like the ensembles - The operational is a cold outlier from +192: I expect the ensembles to trend milder in the next 18z run and operational to follow ensembles. Also it looks like the potential for a SSW has diminished.



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


nsrobins
28 January 2020 17:54:38
The GFS OP is not supported by it’s suite. GEM also sinking the high. The solution many of us crave is still in the clutches of virtual space I’m afraid.
Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
doctormog
28 January 2020 18:01:08

The GFS OP is not supported by it’s suite. GEM also sinking the high. The solution many of us crave is still in the clutches of virtual space I’m afraid.

Originally Posted by: nsrobins 


This is the mean at 180hr


 


 


JACKO4EVER
28 January 2020 18:12:52

The GFS OP is not supported by it’s suite. GEM also sinking the high. The solution many of us crave is still in the clutches of virtual space I’m afraid.

Originally Posted by: nsrobins 


agree and absolutely no surprise. That fat AZ won’t leave things alone- where have we seen that before? 😀

tallyho_83
28 January 2020 18:37:57


 


agree and absolutely no surprise. That fat AZ won’t leave things alone- where have we seen that before? 😀


Originally Posted by: JACKO4EVER 


LOOKS pretty dire really. Fingers crossed for a SSW. Although the 12z run seems to show the SSW backing off a little at end of run. Both ICON and GEM are far from keen on a northerly as someone else mentioned. So all eyes on the 18z run and ECMWF? GFS 12Z operational run was a cold outlier looking at the ensembles ...so let's hope that when the 18z run comes out that the operational doesn't follow it's ensembles and other models like GEM/ICON etc and that the GEM and ICON follows the GFS operational and ECMWF etc. The northerly for 4th 5th and 6th Feb is hanging by a thread! 


All eyes on ECM and 18z. 


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


doctormog
28 January 2020 18:42:36
https://www.wetterzentrale.de/maps/ECMOPEU12_168_1.png 

Early days but potentially better than the rest of the winter to date.
Russwirral
28 January 2020 18:49:39
https://www.wetterzentrale.de/maps/ECMOPEU12_168_1.png 

Early days but potentially better than the rest of the winter to date.


 


That LP off iberia will be critical. We need LP to develop south of the HP


doctormog
28 January 2020 18:51:28


 


 


That LP off iberia will be critical. We need LP to develop south of the HP


Originally Posted by: Russwirral 


I suspect the ECM 12z evolution is more likely than the GFS based on past performance.


idj20
28 January 2020 19:15:19

Pretty much as what I said in my own Facebook weather page on Monday . . .

"Looking further ahead still into next week, the models have been playing about with the idea of high pressure forming over the Atlantic thus causing our winds to be coming in from the northern quarter. In layman's terms that would mean colder but more in the way of settled conditions by the end of next week, but it will depend on the positioning of the high and we may end up having more of the same ol' cloudy, damp and mild stuff. It's all a long way off in forecasting terms and thus said in low confidence at this point anyway".


Folkestone Harbour. 
fairweather
28 January 2020 19:25:17


 


 


On average, February will be average 


Originally Posted by: IanT 


Nicely put.  Although of course therein lies the problem. You can't get a sensible mean with any confidence when the spread is as great as it is at T+240 + 


S.Essex, 42m ASL
fairweather
28 January 2020 19:27:36


Widespread snow fall on this run too on the 10th as fronts collide into an established cold block.

Probably the best run of the winter so far by a long shot.


Originally Posted by: Russwirral 


Very true although "damned by faint praise" springs to mind  


S.Essex, 42m ASL
fairweather
28 January 2020 19:36:37

The “toppler” discussion is one that baffles me, not because it’s an unlikely scenario this time but rather that it is discussed as being a normal regular occurrence in recent years. Even a “decent northerly toppler” (never mind an Arctic northerly plunge) has been totally lacking in recent years. Perhaps this one will transpire but I will believe it if it is still shown in a few days time.

Originally Posted by: doctormog 


Maybe. I would agree this year but not sure about "recent" years although I agree some have been virtual topplers in that was what happened to them in the charts but the reality was it never even made the northerly for real in the first place!


S.Essex, 42m ASL

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