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doctormog
22 December 2014 16:50:37


 


well a nationwide freeze it certainly isn't. If it's windy, cold rain your after for a couple of days then fine,  but a return to a flatter pattern looks almost certain to me, which looks to be a milder solution. Despite NW winds this month, isn't the CET currently slightly above the December average?


Originally Posted by: JACKO4EVER 


Is that seriously the best comment you can make about that chart? 


It is interesting to see you are going against the Met Office outook and suggesting a milder solution. I have no idea re. the CET, as it is not something I look at very much and the NW this month have not been overly cold (in terms of source) although they have been cold enough for many in NWern parts, especially Scotland to have seen snow.


My point is not that the outlook is very wintry (although it could still turn out that way) but that this mild flatter pattern you seem to mention regularly is by no means certain given the range of options. It is also not widely supported by the experts or a a consensus in the models. 


I am not after windy cold rain for a couple of day so thankfully that's not what the charts show for my location.


The Beast from the East
22 December 2014 16:54:20

GEM is all over the place. We get some undercut which saves the day


Shame about GfS after METO looks better. No cross model agreement for a while yet


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
The Beast from the East
22 December 2014 16:56:26

GFS seems to want to power up the northern jet with no undercutting. Lets hope this is wrong but it has been performing well so its a shame. No way to get away from that


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Quantum
22 December 2014 16:59:12

On the positive side, I'm almost certain the 18Z will be better; regression to the mean and all.


 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
doctormog
22 December 2014 16:59:41


GFS seems to want to power up the northern jet with no undercutting. Lets hope this is wrong but it has been performing well so its a shame. No way to get away from that


 


Originally Posted by: The Beast from the East 


If it has been performing well does that mean the 06z GFS op run will also be correct.  It cannot be "performing well" and totally inconsistent between runs (like all the other models).


David M Porter
22 December 2014 17:00:38


GFS seems to want to power up the northern jet with no undercutting. Lets hope this is wrong but it has been performing well so its a shame. No way to get away from that


 


Originally Posted by: The Beast from the East 


If there is one flaw the GFS has (according to what people have said in the past), it is that sometimes at this time of year it overcooks the strength of the atlantic. I've been following the model output regularly for nearly 10 years now and I have seen this time after time with that model, especially at this time of year.


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
Frostbite80
22 December 2014 17:02:31
Ukmo being re-run as after 120h it has failed, however all 12z charts shown up to this point are correct! Should see full run after 6.30
The Beast from the East
22 December 2014 17:07:36

Ukmo being re-run as after 120h it has failed, however all 12z charts shown up to this point are correct! Should see full run after 6.30

Originally Posted by: Frostbite80 


Did JACKO hack into the server?


Potentially the best chart of the season and we have to wait!


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Matty H
22 December 2014 17:08:22


 


Did JACKO hack into the server?


Potentially the best chart of the season and we have to wait!


 


Originally Posted by: The Beast from the East 


By popular request I'm changing your username to yoyo 


JACKO4EVER
22 December 2014 17:08:25


 


Did JACKO hack into the server?


Potentially the best chart of the season and we have to wait!


 


Originally Posted by: The Beast from the East 


LOL


 


:-0

Quantum
22 December 2014 17:09:19


 


If there is one flaw the GFS has (according to what people have said in the past), it is that sometimes at this time of year it overcooks the strength of the atlantic. I've been following the model output regularly for nearly 10 years now and I have seen this time after time with that model, especially at this time of year.


Originally Posted by: David M Porter 


The problem is it has backup from all of the minor models. The scary thing is the GEM is actually an upgrade on the horror of this morning though! If the ECM backs the GFS then I think the end is nigh 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Whether Idle
22 December 2014 17:10:37

This is GFS ptb 1  at around 126: The point is, it is akin to the UKMO. 



Dover, 5m asl. Half a mile from the south coast.
doctormog
22 December 2014 17:10:44


 


By popular request I'm changing your username to yoyo 


Originally Posted by: Matty H 


Surely, as it is a weather forum, bi-Polar would be better? 


The Beast from the East
22 December 2014 17:10:46

http://modeles.meteociel.fr/modeles/gens/run/gens-0-1-126.png?12


GFS control so far


Better, but the northern arm will still collapse the ridge. The entire ens suite will probably follow a similar trend. Oh dear, lets hope ECM is completely the opposite!


 


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
The Beast from the East
22 December 2014 17:13:42


 


By popular request I'm changing your username to yoyo 


Originally Posted by: Matty H 


Yes, the razor is coming out of the drawer tonight (but I'll wait for ECM)


"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
Frostbite80
22 December 2014 17:14:26


This is GFS control  at around 126: The point is, it is akin to the UKMO. 



Originally Posted by: Whether Idle 

WI that's perb 1 mate.

Whether Idle
22 December 2014 17:15:57


WI that's perb 1 mate.


Originally Posted by: Frostbite80 


Sorry, fat finger moment.


Dover, 5m asl. Half a mile from the south coast.
Frostbite80
22 December 2014 17:17:14


 


Sorry, fat finger moment.


Originally Posted by: Whether Idle 

still a lovely looking chart though tongue-out

JACKO4EVER
22 December 2014 17:17:47


http://modeles.meteociel.fr/modeles/gens/run/gens-0-1-126.png?12


GFS control so far


Better, but the northern arm will still collapse the ridge. The entire ens suite will probably follow a similar trend. Oh dear, lets hope ECM is completely the opposite!


 


Originally Posted by: The Beast from the East 


and to the point, what would happen if the Northern arm did collapse the ridge? Perhaps you could give me a clue Doc... 🙂 LOL

Quantum
22 December 2014 17:20:35

If the GEFS are good then I'll be less worried about the ECM, good ensembles and bad OP means it will probably change by 10pm anyway.


 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
nsrobins
22 December 2014 17:23:39

The GFS ENS suite offer a huge range of solutions again - so in essence still inconclusive after the 'storm'.
The headline just now is the UKMO solution in respect the shift south of the weekend low.


Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
doctormog
22 December 2014 17:23:54


 


and to the point, what would happen if the Northern arm did collapse the ridge? Perhaps you could give me a clue Doc... 🙂 LOL


Originally Posted by: JACKO4EVER 


I'll resist the urge to over-analyse one ensemble member from one model of one run thanks. Overall the picture remains very uncertain with th chance of a potent storm at the weekend and perhaps some snow and some cold. That has always been the picture and the details have never been certain.


"What happens after" you ask? I have no idea what is going to happen on Boxing Day never mind beyond. If you are confident good luck to you but I'd love to know upon what that is based. The 06z GFS op run? 


Gavin P
22 December 2014 17:27:24

I'm actually on the verge of putting a duvet over my head and giving up.


Rural West Northants 120m asl
Short, medium and long range weather forecast videos @ https://www.youtube.com/user/GavsWeatherVids
Quantum
22 December 2014 17:29:24


I'm actually on the verge of putting a duvet over my head and giving up.


Originally Posted by: Gavin P 


I think the problem is that the weather is at a point of unstable equilibrium like a haystack balanced on a needle, any slight perturbation causes it to fall off but which way we have no idea. If the GEFS on the whole still support a cold spell then I recommend binning the 12Z OP runs.


 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Frostbite80
22 December 2014 17:32:01


I'm actually on the verge of putting a duvet over my head and giving up.


Originally Posted by: Gavin P 

well I have only just stopped laughing after the 6z's it's like pushing one end of a bent bit of plastic down the other end sticks up, the models are the same just as one comes into line with another you get another one with a totally different scenario! It really is genuinely amusing to me.......annoying but amusing!

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