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Rob K
04 December 2017 21:44:56


 


Thanks Arcus - so it's a way of describing the HP but in TWO language, same as the Bartlett High!? Ok thanks.


Originally Posted by: tallyho_83 


Bartlett High is a "semi-official" (or at least long established) terminology. Murr sausage is just TWO silliness AFAIK.


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
pdiddy
04 December 2017 21:45:01

I've just seen Nick Miller on tonight's Week Ahead forecast on the BBC Weather website mention storm force winds associated with that low pressure system which is forecast to bring in that next Arctic blast towards the end of next week. Could that be Storm Caroline on the way as well then during this week?

Originally Posted by: johncs2016 


Not if it's only affecting Scotland... If it might get windy in Englandshire, then a named storm is likely


FWIW I'm still hopeful of the Russian/Scandi high making an appearance.  Hints have been modeled in FI and if we continue see lower heights in to Europe I believe this is a possibility.

doctormog
04 December 2017 21:50:30

Once again even at an early stage the GFS op run seems colder than the ECM 12z was http://www.wetterzentrale.de/maps/GFSOPEU18_75_1.png 

A spot of low “feels like/wind chill” there.


Edit - very consistent with once again 514dam air here -same as it was on the 12z but much lower than the 12z ECM http://www.wetterzentrale.de/maps/GFSOPEU18_84_1.png 


White Meadows
04 December 2017 21:53:05


 


Bartlett High is a "semi-official" (or at least long established) terminology. Murr sausage is just TWO silliness AFAIK.


Originally Posted by: Rob K 

Didn’t it used to be coined as a Kettley sausage (for those younger folk this is John Kettley) tha famous bbc snow loving weather forecaster from the 80’s


Then Steve Murr had taken the throne after referencing the sausage like high pressure scenario year after year?

The Beast from the East
04 December 2017 21:57:19
Sadly you have to back ECM over GFS in these situations
"We have some alternative facts for you"
Kelly-Ann Conway - special adviser to the President
SJV
04 December 2017 21:58:00


Once again even at an early stage the GFS op run seems colder than the ECM 12z was http://www.wetterzentrale.de/maps/GFSOPEU18_75_1.png 

A spot of low “feels like/wind chill” there.


Edit - very consistent with once again 514dam air here -same as it was on the 12z but much lower than the 12z ECM http://www.wetterzentrale.de/maps/GFSOPEU18_84_1.png 


Originally Posted by: doctormog 


ECM perhaps siding near to, but not quite as chilly as the GFS for the 00z set?

Downpour
04 December 2017 21:58:51

The pub run settles on a Cheshire Gap streamer for Friday. Similar set up to the first dump of Jan 2013 down here, a wetish snow affair which was followed 48 hrs later by a bizarre system that tracked north from France and delivered a more serious dump on the Sunday. Would have been very disruptive had it not fallen on a weekend. Great weekend that - snow on lying snow in London.


Chingford
London E4
147ft
doctormog
04 December 2017 21:59:27

Sadly you have to back ECM over GFS in these situations

Originally Posted by: The Beast from the East 


Which run? The GFS has been consistent yet you would back one individual operational run of the ECM? Why? Just because it is mild? If the 00z run is colder than the GFS I’m guessing you will still back it or will you shift your Eeyore’s gloomy place analysis to the next mildest option?


Gandalf The White
04 December 2017 22:08:21

18z has shifted the first slider west, as is always possible, and it misses almost completely.


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


squish
04 December 2017 22:09:21
18z has the weekend slider missing the UK to the SW.....stays cold, but largely dry.
D.E.W on Dartmoor. 300m asl
glenogle
04 December 2017 22:11:59


18z has shifted the first slider west, as is always possible, and it misses almost completely.


Originally Posted by: Gandalf The White 


Presumably that's good from a longevity of cold point of view?


UserPostedImage LLTNP 105m asl 
SEMerc
04 December 2017 22:12:41

We shall see but I think the second (and likely more potent) slider will hit the UK.

Gandalf The White
04 December 2017 22:13:34

The second slider appears to be at a slightly more favourable angle to produce something wintry.



Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


Gandalf The White
04 December 2017 22:15:56

There we go, an upgrade on the 12



Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


Rob K
04 December 2017 22:16:07


18z has shifted the first slider west, as is always possible, and it misses almost completely.


Originally Posted by: Gandalf The White 


the second looks ok though. 


 


Maybe the "halfway house" between ECM and GFS would hit the jackpot!


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
Joe Bloggs
04 December 2017 22:22:25

Evening all 😊


My favourite chart of the day. And it’s only at T+78! 


http://www.wetterzentrale.de/maps/GFSOPUK18_78_43.png


 



Manchester City Centre, 31m ASL

Gooner
04 December 2017 22:25:57

Sadly you have to back ECM over GFS in these situations

Originally Posted by: The Beast from the East 


Why


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


johncs2016
04 December 2017 22:28:50


 


Not if it's only affecting Scotland... If it might get windy in Englandshire, then a named storm is likely


FWIW I'm still hopeful of the Russian/Scandi high making an appearance.  Hints have been modeled in FI and if we continue see lower heights in to Europe I believe this is a possibility.


Originally Posted by: pdiddy 


Technically speaking though, a weather system will be classed as a named storm if there is at least an amber warning issued for that by the Met Office in the UK, or at least an orange warning issued for that in the Irish Republic issued by Met Eirann with that name being officially designated by whichever of those two bodies was the first to give out such warnings.


If the Met Office are doing their job properly, they are supposed to cover the whole of the UK and not just England. This means that if they are the ones who issue those warnings (and thus give such a system its name), this should therefore by rights, result in that system then being classed as a named storm even if these warnings only affect a small part of Scotland and nowhere else in the UK due to the fact that Scotland is itself, part of the UK and therefore, part of the area which is covered by the UK Met Office.


That is why if there is a forecast of possible storm force northerlies in parts of Scotland towards the end of this week from this particular weather system which could therefore potentially result in an amber warning there, that has to then lead to the possibility of that system then being officially named as Storm Caroline which is the next name on that list after all.


 


The north of Edinburgh, usually always missing out on snow events which occur not just within the rest of Scotland or the UK, but also within the rest of Edinburgh.
roger63
04 December 2017 22:29:56

18z has the weekend slider missing the UK to the SW.....stays cold, but largely dry.

Originally Posted by: squish 


http://www.meteociel.fr/modeles/ukmo2.php?ech=72&carte=2000


http://www.meteociel.fr/modeles/ukmo2.php?ech=96&carte=2000


http://www.meteociel.fr/modeles/ukmo2.php?ech=120&carte=2000


Faxes out to 120h look pretty dry for most.

Rob K
04 December 2017 22:30:58
GFS 18Z is impressively consistent with the 12Z out to 192hrs. Only minor changes but the broad pattern is near identical. The third low might be a bit more progressive as there are lower heights coming out of Canada.
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
04 December 2017 22:36:49

18z has the weekend slider missing the UK to the SW.....stays cold, but largely dry.

Originally Posted by: squish 


Very early days yet. The weekend "slider" is just starting to come into view on the high res models.


Here it is on the ICON 18z T120 chart



Here is GFS 18z at the same time - completely different - much further south. As ever lots more runs needed. The track of this won't be clear until we get inside T48.


fairweather
04 December 2017 22:44:07


 


Why


Originally Posted by: Gooner 


Because it is currently the milder? I would back the GFS if it was the milder. Just because historically the milder solution has been more common in the last few years. No reason to say it will be this time and all the solutions are cold but that's just the way it's been so many times before. But frankly and based on the facts, either solution is possible and different people's speculation won't make one more likely than the other.


S.Essex, 42m ASL
White Meadows
04 December 2017 22:44:56
A true wintry slider slips up the English Channel.
With many corrections and incorrections to be made in the next 144 hours, history teaches us the whole thing will adjust north over time to be a wet affair for most away from northern hills. Hope I’m wrong.
Gooner
04 December 2017 22:50:53

A true wintry slider slips up the English Channel.
With many corrections and incorrections to be made in the next 144 hours, history teaches us the whole thing will adjust north over time to be a wet affair for most away from northern hills. Hope I’m wrong.

Originally Posted by: White Meadows 


Not how the Beeb see it


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


nsrobins
04 December 2017 22:53:05
I wonder where the later stages of the 18Z will sit in the ensembles? 😂😉
I also wonder why Ian hasn’t commented on it yet?
Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO

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