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Joe Bloggs
02 December 2017 09:10:08


 


 


Yes I'm really surprised at some of the stuff I'm reading this morning, both ECM and GEM show what is by far the most likely outcome after the initial northerly. I don't know if people are getting excited by the steep thermal gradient and the prospect of back edge snow, but anybody who has been watching the charts for any length of time should be able to see where this is heading, a window of opportunity for snow showers in the usual places before milder weather returns from the NW next Saturday - as per the METO update. 


Are we looking at easterlies, prolonged cold or battleground events ? No, to be honest not much really to see here. 


Originally Posted by: Shropshire 


Just out of interest when did you start rating the ECM over the GFS? I remember when you were insistent that the Euros “always” followed the GFS. You used to make this point over and over again. 



Manchester City Centre, 31m ASL

Solar Cycles
02 December 2017 09:11:06

Again my advice would be to manage expectations. It’s likely to be cold and possibly stormy later next week but with the UKM text forecast tempering the impact of the forecast North Sea low, and the track and intensity still not in any way determined, I’m reluctant to forecast any detail yet - especially with respect location and amount of snowfall.
It could come to nothing, or it could be an historic event - it’s too early to call IMO.
It is fun to watch unfold though I’ll admit that πŸ˜‰

Originally Posted by: nsrobins 

Wise words, I wouldn’t look past Thursday yet. Lots of uncertainty still with the ECM only interested in a breif northerly plunge before the next frontal attack. I’ve a feeling that the ECM will be the one playing catch up this time around though.

Shropshire
02 December 2017 09:16:34


 


Just out of interest when did you start rating the ECM over the GFS? I remember when you were insistent that the Euros “always” followed the GFS. You used to make this point over and over again. 


Originally Posted by: Joe Bloggs 


I'm not saying one is better than the other here, I have in the past commented that I feel the GFS has handled the corridor of death better than the ECM/UKMO in the past.


Here, this is fairly a simple evolution that anyone who has basic synoptic understanding can grasp, allied to the fact that the worst outcome displayed by the models for the UK is nearly always the one that verifies. 


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.
Joe Bloggs
02 December 2017 09:21:11


 


I'm not saying one is better than the other here, I have in the past commented that I feel the GFS has handled the corridor of death better than the ECM/UKMO in the past.


Here, this is fairly a simple evolution that anyone who has basic synoptic understanding can grasp, allied to the fact that the worst outcome displayed by the models for the UK is nearly always the one that verifies. 


Originally Posted by: Shropshire 


Fair enough. πŸ˜€


12z runs will be interesting. 


Always try to be objective rather than pessimistic though Ian. I like your posts because if you start getting excited I know it’s game on. 



Manchester City Centre, 31m ASL

Gandalf The White
02 December 2017 09:21:24


 


 


Yes I'm really surprised at some of the stuff I'm reading this morning, both ECM and GEM show what is by far the most likely outcome after the initial northerly. I don't know if people are getting excited by the steep thermal gradient and the prospect of back edge snow, but anybody who has been watching the charts for any length of time should be able to see where this is heading, a window of opportunity for snow showers in the usual places before milder weather returns from the NW next Saturday - as per the METO update. 


Are we looking at easterlies, prolonged cold or battleground events ? No, to be honest not much really to see here. 


Originally Posted by: Shropshire 


To be fair you’re predicting what generally happens and it could happen this time.


I would point out that the MetO update is issued around 2am and is therefore based mainly on yesterday’s 12z runs; it doesn’t and cannot include 00z information. That would explain why it’s not quite in sync with the latest output.  In any event there’s generally a degree of vagueness at 6-7 days out.


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


doctormog
02 December 2017 09:28:58


 


I'm not saying one is better than the other here, I have in the past commented that I feel the GFS has handled the corridor of death better than the ECM/UKMO in the past.


Here, this is fairly a simple evolution that anyone who has basic synoptic understanding can grasp, allied to the fact that the worst outcome displayed by the models for the UK is nearly always the one that verifies. 


Originally Posted by: Shropshire 


A fairly simple evolution is not necessarily the correct one at the time scale we are discussing. Any who has a basic understanding of the weather model output should be able to grasp that.


That aside the ECM keeps things cool and unsettled to the end of run.


Rob K
02 December 2017 09:39:37

The ECM doesn't look like a classic "toppler" to me. We never end up on the mild side of the jet and the pattern remains amplified albeit less so than on some of the other models.

Looking through the rest of the minor models as well it seems to be ECM that is out on a limb at the moment.


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." β€” Jerome K. Jerome
Gooner
02 December 2017 09:40:01


 


 


How did he do that ? I pointed out that the METO update for cold 'early next week' was erroneous given the NWP on the Wednesday just gone. He waffled a bit about broadscale output then admitted he had nothing to do with the Exeter update. 


Originally Posted by: Shropshire 


Waffled ?? Blimey pot and kettle 


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


doctormog
02 December 2017 09:44:14
So, let’s get this straight before the 06z GFS emerges...

If the GFS run once again shows more extreme or prolonged cold it should be discounted but it if it is milder than the ECM 00z it I see the most likely outcome to verify?

In short, pick the milder/est solution and then try to discredit the other opinions with spurious reasons. That would be an agenda not model output analysis. Just my opinion of course and not suggesting that anyone is likely to do something as silly as that for wind up reasons.
Chunky Pea
02 December 2017 09:57:41

So, let’s get this straight before the 06z GFS emerges...

If the GFS run once again shows more extreme or prolonged cold it should be discounted but it if it is milder than the ECM 00z it I see the most likely outcome to verify?

In short, pick the milder/est solution and then try to discredit the other opinions with spurious reasons. That would be an agenda not model output analysis. Just my opinion of course and not suggesting that anyone is likely to do something as silly as that for wind up reasons.

Originally Posted by: doctormog 


 


Haven't looked at GFS, but the ECM would have some big snow potential for you in NE Scotland.


Bog standard stuff for here though. 


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
doctormog
02 December 2017 10:01:58


 


 


Haven't looked at GFS, but the ECM would have some big snow potential for you in NE Scotland.


Bog standard stuff for here though. 


Originally Posted by: Chunky Pea 


No, you’re right CP but others’ mind games  are tedious (not from you as we know your preferences, and your analysis is accurate and consistent from those preferences )


The 06z GFS is coming out currently and is out to 123hr as I write this. At a glance it looks largely unchanged. http://www.wetterzentrale.de/maps/GFSOPEU06_123_1.png 


Gooner
02 December 2017 10:09:29

6z @ 144 shows a nice kink in the isobars running down the U.K. Looks s decent start to the run 


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


polarwind
02 December 2017 10:12:00


The ECM doesn't look like a classic "toppler" to me. We never end up on the mild side of the jet and the pattern remains amplified albeit less so than on some of the other models.

Looking through the rest of the minor models as well it seems to be ECM that is out on a limb at the moment.


Originally Posted by: Rob K 

That is a big difference, along with the associated general or averaged WNW to ESE jet profile, as compared with the general or averaged very persistent SW to NE track of the last 30 years: now bringing cold northwesterly winds, rather than warm or mild ones.


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Dave,Derby
Chunky Pea
02 December 2017 10:12:58


 


No, you’re right CP but others’ mind games  are tedious (not from you as we know your preferences, and your analysis is accurate and consistent from those preferences )


The 06z GFS is coming out currently and is out to 123hr as I write this. At a glance it looks largely unchanged. http://www.wetterzentrale.de/maps/GFSOPEU06_123_1.png 


Originally Posted by: doctormog 


Feeling cold without the perks is how I would describe the outlook for my area, though I would not rule out the odd wet snow shower at times. Can almost hear that distinctive sloppy ploppy sound as the flakes hit the ground already. 


 


 


 


 


 


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
roger63
02 December 2017 10:14:25


6z @ 144 shows a nice kink in the isobars running down the U.K. Looks s decent start to the run 


Originally Posted by: Gooner 


Unfortunately at 144h the LP is further NE than the 0h which could mean the northerly topples more quickly.be interesting to see the Ens for 144h , the 0h  ENS had the LP much closer  to the UK


doctormog
02 December 2017 10:15:53


 


Unfortunately at 144h the LP is further NE than the 0h which could mean the northerly topples more quickly.be interesting to see the Ens for 144h , the 0h  ENS had the LP much closer  to the UK



Originally Posted by: roger63 


Are you looking at the same run as me Roger? Your analysis doesn’t seem to match the output very closely.


Edit: For clarity, 30hr after the chart you posted nothing seems to have “toppled” anywhere http://www.wetterzentrale.de/maps/GFSOPEU06_174_1.png 


tallyho_83
02 December 2017 10:16:00

From the pole view down - Look at the block!? - Haven't seen such extensive blocking in a long while from Western France off Biscay, Western Ireland up to western Iceland stretching northwards into Greenland and then into the North pole and joining the north Pole block!? - right in the centre of the north pole. 



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


moomin75
02 December 2017 10:16:12


 


Unfortunately at 144h the LP is further NE than the 0h which could mean the northerly topples more quickly.be interesting to see the Ens for 144h , the 0h  ENS had the LP much closer  to the UK



Originally Posted by: roger63 

Pretty much what Darren suggested.


Witney, Oxfordshire
100m ASL
Shropshire
02 December 2017 10:16:37


 


Unfortunately at 144h the LP is further NE than the 0h which could mean the northerly topples more quickly.be interesting to see the Ens for 144h , the 0h  ENS had the LP much closer  to the UK



Originally Posted by: roger63 


 


I think this run is a belter to be honest. 


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.
The Beast from the East
02 December 2017 10:16:57

06z should sustain the cold longer even though its far less snowy


This is evolving. We could end up dry and cold with wintry showers on the coasts


 


"We have some alternative facts for you"
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The Beast from the East
02 December 2017 10:19:23

This is an early pub run. If ECM shows this tonight, we can all start to believe perhaps!



"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Joe Bloggs
02 December 2017 10:20:28

06z is a belter.


It won’t be dry either, especially in western areas. Fantastic - some really cold air too. 


http://www.wetterzentrale.de/maps/GFSOPEU06_153_1.png


http://www.wetterzentrale.de/maps/GFSOPEU06_153_2.png


Snow in Glasgow, Liverpool and Manchester if this one verifies. 



Manchester City Centre, 31m ASL

tallyho_83
02 December 2017 10:21:50
From +144 the low pressure in the north sea just off coast of Norway, doesn't really want to sweep southwards it just sort of stalls and weakens!?
Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
---------------------------------------
Sean Moon
Magical Moon
www.magical-moon.com


Solar Cycles
02 December 2017 10:22:25


06z is a belter.


It won’t be dry either, especially in western areas. Fantastic - some really cold air too. 


http://www.wetterzentrale.de/maps/GFSOPEU06_153_1.png


http://www.wetterzentrale.de/maps/GFSOPEU06_153_2.png


Snow in Glasgow, Liverpool and Manchester if this one verifies. 


Originally Posted by: Joe Bloggs 

Sod them, what about IMBY. 😎

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