Rob K
12 January 2018 11:09:45

The GFS often overdoes these little circulations, but the 132-144hr period on this run would give an absolute pasting to the Midlands.


 



 


Of course, further south the dreaded w*** s***** would be in evidence, but you need these systems to get snow well inland so it's worth the risk! 


Yateley, NE Hampshire, 73m asl
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Saint Snow
12 January 2018 11:14:06

Originally Posted by: Rob K 


The GFS often overdoes these little circulations, but the 132-144hr period on this run would give an absolute pasting to the Midlands.


 



 


Of course, further south the dreaded w*** s***** would be in evidence, but you need these systems to get snow well inland so it's worth the risk! 



 


I'd not be unhappy with that specific scenario! I think more the northern half of the Midlands and into NW England. Here's 6 hours before your chart:



Those nice kinks in the isobars... mmmm...



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Arcus
12 January 2018 11:17:13
Quite a few 06z GEFS members now showing a similar scenario of a satellite low getting caught up in the flow and impacting the UK in the T+114 to T+150 period.
Ben,
Nr. Easingwold, North Yorkshire
30m asl
overland
12 January 2018 11:21:28

Originally Posted by: Brian Gaze 


 


Agree. Having said that we need to agree what conditions were like in the Jan 84 "snowfest". As noted recently I have no recollection of significant snow during that month in York. 



Living in Mid Staffs at the time we had several notable snowfalls that month, although I don't remember the snow hanging around for days on end.


Mumbles, Swansea. 80m asl
roger63
12 January 2018 11:24:26

Do I detect a slight weakening in the LP  after mid week  compared to 0h?


Gavin D
12 January 2018 11:28:41

Met office maps have updated for Jan the next 3 monthly period of Feb to April looks mild and unsettled


2cat_20180101_mslp_months24_global_deter_public.thumb.png.a5a62c287196e8cd340a7e23334ada67.png2cat_20180101_prec_months24_global_deter_public.thumb.png.cc9f7535ceeb5be493892774b7aacae6.png


2cat_20180101_temp2m_months24_global_deter_public.thumb.png.c5c7f5a0f341b32d566d545cc8388ce7.png2cat_20180101_t850_months24_global_deter_public.thumb.png.ace5cb1d3ff4fa2ae07462a42b4408fd.png


idj20
12 January 2018 11:29:08

Originally Posted by: Saint Snow 


 


 


I'd not be unhappy with that specific scenario! I think more the northern half of the Midlands and into NW England. Here's 6 hours before your chart:



Those nice kinks in the isobars... mmmm...




Even out of all this, I'd probably STILL get to experience the usual crappy southerly gales all the same at this end - this has January '84 written all over it and thus my expectations for real wintry weather remain low as things stand.


Folkestone Harbour. 
tallyho_83
12 January 2018 11:29:26

Difference couldn't be more different in FI - Gone from bitterly cold easterly with snow showers to the pest from the west'. on 06z run. Could have been more different if it tried!




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Ally Pally Snowman
12 January 2018 11:32:54

Originally Posted by: Rob K 


The GFS often overdoes these little circulations, but the 132-144hr period on this run would give an absolute pasting to the Midlands.


 



 


Of course, further south the dreaded w*** s***** would be in evidence, but you need these systems to get snow well inland so it's worth the risk! 



 


Very snowy event for M4 north upto about Manchester.  obviously won't happen exactly as shown but a disturbance in the flow is very likely as the pressure is so low and 850s are so low.


 


Bishop's Stortford 85m ASL.
polarwind
12 January 2018 11:48:55

Originally Posted by: roger63 


 


Or putting it another way cold without snow is like sex without orgasm...


Which way was that?


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Dave,Derby
tallyho_83
12 January 2018 11:51:49

Originally Posted by: Ally Pally Snowman 


 


 


Very snowy event for M4 north upto about Manchester.  obviously won't happen exactly as shown but a disturbance in the flow is very likely as the pressure is so low and 850s are so low.


 



 


So to all those who are unsure of where north of the M4 is - here is a reminder: 


 



Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
---------------------------------------
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squish
12 January 2018 11:54:04
Easterly develops on control and a good many GEFS (all in FI of course). See John Hammond blog for his thoughts...
D.E.W on Dartmoor. 300m asl
Rob K
12 January 2018 11:55:42

Originally Posted by: Gavin D 



Met office maps have updated for Jan the next 3 monthly period of Feb to April looks mild and unsettled


2cat_20180101_mslp_months24_global_deter_public.thumb.png.a5a62c287196e8cd340a7e23334ada67.png2cat_20180101_prec_months24_global_deter_public.thumb.png.cc9f7535ceeb5be493892774b7aacae6.png


2cat_20180101_temp2m_months24_global_deter_public.thumb.png.c5c7f5a0f341b32d566d545cc8388ce7.png2cat_20180101_t850_months24_global_deter_public.thumb.png.ace5cb1d3ff4fa2ae07462a42b4408fd.png




Write off the rest of winter if those are accurate - fortunately, in my experience, they give about as much guidance as a blind labrador.


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
Rob K
12 January 2018 12:00:18

Originally Posted by: squish 

Easterly develops on control and a good many GEFS (all in FI of course). See John Hammond blog for his thoughts...


Quite a wintry outlook from the Hamster. https://weathertrending.com/2018/01/12/on-the-horizon-brace/


 


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
12 January 2018 12:05:28

Haven't the Midlands had enough snow this year???! 


No, we don't want a low pressure system thank you very much, kindly p*ss off and leave us in a polar NW'ly flow thanks. 



Manchester City Centre, 31m ASL

Brian Gaze
12 January 2018 12:08:59

Interesting GEFS06z update and suggestions of a warm sector feeding into the pattern at the time approaches.



Brian Gaze
Berkhamsted
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Jive Buddy
12 January 2018 12:14:34

Originally Posted by: roger63 


 


Or putting it another way cold without snow is like sex without orgasm...



What's "sex"?....


It's not over, until the fat Scandy sinks.....

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snow 2004
12 January 2018 12:16:39

Originally Posted by: Joe Bloggs 


Haven't the Midlands had enough snow this year???! 


No, we don't want a low pressure system thank you very much, kindly p*ss off and leave us in a polar NW'ly flow thanks. 



 


Agreed, not really keen on the idea of a low pressure running through the flow (unless it's a Polar Low).


It's disturbances like this which end up cutting off the convective flow for 12+ hours. 


Glossop Derbyshire, 200m asl
Gandalf The White
12 January 2018 12:29:16

Originally Posted by: Brian Gaze 


Interesting GEFS06z update and suggestions of a warm sector feeding into the pattern at the time approaches.




ECM 00z ensemble for London shows a similar uptick early on 18th. Still huge uncertainty after day 10 although the only cluster keeps it cold.



 


The same spike (early on 18th) is visible on the precipitation chart



 


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


Rob K
12 January 2018 12:29:29

Originally Posted by: Brian Gaze 


Interesting GEFS06z update and suggestions of a warm sector feeding into the pattern at the time approaches.




 


Some interesting easterly options in there. Nice to see a few -10Cs at last.


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
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