The Weather Outlook

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nsrobins
21 November 2018 06:47:55
UKM and EC now decent match at 120hrs with heights to the N draining and the ‘bowling ball’ about to deliver a knockout blow to those looking for early season cold. GFS has a more stretched and disruptive trough that keeps an E drift for longer but it only delays the inevitable.

If ‘signals’ prove correct and heights can suddenly appear towards Scandy next week then fair enough, but as it stands this morning the more mobile Atlantic option going towards December has the shortest odds.


Neil

Fareham, Hampshire 28m ASL (near estuary)

Stormchaser, Member TORRO

Ally Pally Snowman
21 November 2018 06:48:54

Poor output this morning , major models suggesting chances of a significant cold spell in the next 10 to 14 days is very low now.


Bishop's Stortford 85m ASL.
Brian Gaze
21 November 2018 06:53:50

The other point of note is the output this morning goes against what various people (not on the forums or the usual suspects) were briefing even yesterday. 


Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

White Meadows
21 November 2018 06:57:43
Met office still keen on a return to anticyclonic pattern mid December. I’m torn between the fact they have way more access to deeper level of info we do, and their past record in recent years of getting the winter outlook badly wrong at this time of year.
roadrunnerajn
21 November 2018 07:08:11
Those charts this morning do appear to show the usual weather the UK is destined to get in a standard winter. Highs building to the south and west with lows pushing NE.

However the northern hemisphere is not as yet settled and either outcome could still happen.

IMHO I believe mid December onwards might give us some interesting weather with snow in the south but probably not for me.....


Germoe, part of the breakaway Celtic Republic. 80m asl
Rob K
21 November 2018 07:15:11

Met office still keen on a return to anticyclonic pattern mid December. I’m torn between the fact they have way more access to deeper level of info we do, and their past record in recent years of getting the winter outlook badly wrong at this time of year.

Originally Posted by: White Meadows 

In recent years it’s often felt like they’ve been playing catch-up when there’s a change in the trend, through not wanting to abruptly change their long range forecasts. I can appreciate why they don’t want to chop and change with every model run, but it does tend to leave them swimming against the tide sometimes. 


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

Devonian
21 November 2018 07:19:37

The angle now looks like a possible risk of serious flooding in the southern half of the UK during the next few weeks. Not sure about ground water levels but it looks as though a lot of rain is on the way.

Originally Posted by: Brian Gaze 

Hope so, but doesn't look that way to me, with the pressure still too relatively high in the south.

Rob K
21 November 2018 07:24:46

 

Hope so, but doesn't look that way to me, with the pressure still too relatively high in the south.

Originally Posted by: Devonian 

The London ensembles certainly paint a very wet picture for the next two weeks, barring the next three days. Maybe some sign of a pressure rise towards the end of the period, but for much of it the mean pressure is 1000-1010mb. 


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

doctormog
21 November 2018 07:39:14
There is a big difference between the ECM, GFS and GEM 00z op output by day 10 this morning. The latter are two are very much on the cold side in the north, the ECM is not.
DEW
  • DEW
  • Advanced Member
21 November 2018 07:42:31

The Atlantic looks as if it's waking up, with e.g. a dartboard low over Ireland on the 29th (GFS, that is - ECM keeps it in the Atlantic) but still not what I'd call active zonal weather.

Ensembles showing plenty of rain for the south but exactly when is open to question - both temp and rain ensembles appear to have been worked over with an egg-beater for the week starting 27th.


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

IanT
  • IanT
  • Advanced Member
21 November 2018 07:59:48

The other point of note is the output this morning goes against what various people (not on the forums or the usual suspects) were briefing even yesterday. 

Originally Posted by: Brian Gaze 

 

Somewhat too delphic for me..! If not the usual suspects on bulletin boards, who are you referring to and what were they briefing..?


Woking, Surrey. 40m asl.
Brian Gaze
21 November 2018 08:04:36

Somewhat too delphic for me..! If not the usual suspects on bulletin boards, who are you referring to and what were they briefing..?

Originally Posted by: IanT 

Journalists contact me on a regular basis and will say "I've just spoken to X and they are saying..., can you provide some quotes to support that angle and expand on it a little".


Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

IanT
  • IanT
  • Advanced Member
21 November 2018 08:23:59
Ahh - those usual suspects. Got it - thanks.
Woking, Surrey. 40m asl.
Brian Gaze
21 November 2018 08:53:37

Ahh - those usual suspects. Got it - thanks.

Originally Posted by: IanT 

No, that's not what I meant. 


Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

JOHN NI
21 November 2018 08:55:21
Divergence in models is apparent (as has already been mentioned and to be expected) once we get past the next 7 days.

However looking at the GFS ensemble and the extended ECM - the main message that seems to appear is a gradual transition away from blocked to a more progressive Atlantic type for the closing days of November and early December. This would imply wetter and milder conditions more likely to dominate. Towards mid-December the very latter stages of ECM would imply a return to blocked or more slowly progressive types. However If I take the current forecast position of the mid-December height recovery literally (always a very dangerous thing to do at that range) then it would imply dry, chilly and a potentially foggy set-up - without anything particularly notable in terms of extremity.

So insomuch as I can see - nothing to get overly excited about one way or the other - just at the moment.


John.

The orange County of Armagh.

Gavin D
21 November 2018 09:03:08

UKMO extended is more SE'ly this morning with rain moving into the far west

ukm2.2018112800_168_lant.troplant_prp_fcst.gentracker.thumb.png.9716edf28414f456a1935fdb06f03809.png

ECM at the same time is more SW'ly

ecm2.2018112800_168_lant.troplant_prp_fcst.gentracker.thumb.png.6c99d88489caacfb63982136e6eb542f.png

nsrobins
21 November 2018 09:03:11

Divergence in models is apparent (as has already been mentioned and to be expected) once we get past the next 7 days.
However looking at the GFS ensemble and the extended ECM - the main message that seems to appear is a gradual transition away from blocked to a more progressive Atlantic type for the closing days of November and early December. This would imply wetter and milder conditions more likely to dominate. Towards mid-December the very latter stages of ECM would imply a return to blocked or more slowly progressive types. However If I take the current forecast position of the mid-December height recovery literally (always a very dangerous thing to do at that range) then it would imply dry, chilly and a potentially foggy set-up - without anything particularly notable in terms of extremity.

So insomuch as I can see - nothing to get overly excited about one way or the other - just at the moment.

Originally Posted by: JOHN NI 

Which EC charts go to mid-December? (Unless you mean the EC46 and it’s clusters)


Neil

Fareham, Hampshire 28m ASL (near estuary)

Stormchaser, Member TORRO

Gavin D
21 November 2018 09:09:38

The ECM op is most certainly on the mild side this morning from around the 28th when looking at the mean

graphe_ens3.thumb.png.e7ade4fd87494ef600e44ea8d21ed8f6.png

Similar to last night in that up to the 27th has good agreement beyond this is still up for grabs

JOHN NI
21 November 2018 09:12:23

 

Which EC charts go to mid-December? (Unless you mean the EC46 and it’s clusters)

Originally Posted by: nsrobins 

Just glancing out at the extended large scale mean flow - which actually looks well blocked towards mid-December - though not in a favourable place for proper cold. As I say though - longer range is always a punt.....


John.

The orange County of Armagh.

Gavin D
21 November 2018 09:21:33

Gavin D
21 November 2018 09:48:51

Precipitation spikes increasing this morning. Can complain the reservoirs desperately need topping up 

image.thumb.png.4825e50bd5b79097b6cdacb5234c38d5.png

Whiteout
21 November 2018 09:52:01

Precipitation spikes increasing this morning. Can complain the reservoirs desperately need topping up 

image.thumb.png.4825e50bd5b79097b6cdacb5234c38d5.png

Originally Posted by: Gavin D 

 

Lots of cold runs on there, yes, a good snowfall will help. 


Home/Work - Dartmoor

240m/785 ft asl

The Beast from the East
21 November 2018 10:29:46


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Ally Pally Snowman
21 November 2018 11:14:31

All looking rather unpleasantly Zonal at the moment maybe bit of snow for northern hills but rain for most and lots of it, temps average. Some HLB remains but its not anywhere near the right place for UK coldies.  


Bishop's Stortford 85m ASL.
tallyho_83
21 November 2018 11:19:52

All looking rather unpleasantly Zonal at the moment maybe bit of snow for northern hills but rain for most and lots of it, temps average. Some HLB remains but its not anywhere near the right place for UK coldies.  

Originally Posted by: Ally Pally Snowman 

Yes big downgrade - hopefully some better charts next week for model watching?


Home Location - Vixen Tor Close, Okehampton, Devon (221m ASL)

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Sean Moon

Magical Moon

www.magical-moon.com

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