The Weather Outlook

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David M Porter
31 December 2018 00:38:50

An improving GEFS tonight , lets hope the trend continues .

Originally Posted by: Gooner 

Sounds good.


Lenzie, Glasgow

"A body of men holding themselves accountable to nobody ought not to be trusted by anybody." – Thomas Paine

roadrunnerajn
31 December 2018 07:11:40
This morning GFS is now catching up with the ECM keeping high pressure over the UK until the 11th 12th after that if you want -15 850s go to Athens....
Germoe, part of the breakaway Celtic Republic. 80m asl
marting
31 December 2018 08:16:20
I see the ECM has taken the top end of its ensembles this morning with that operational run. There are quick a pack of colder runs in their this morning, I suspect showing the northerly hit.

Martin


Martin

Greasby, Wirral.

Gooner
31 December 2018 08:23:18

HP Dominated throughout , very few eye candy charts nothing in the way of an Atlantic onslaught either 

Dry at least and with a bit of luck some chilly nights 


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



tallyho_83
31 December 2018 08:44:51

HP Dominated throughout , very few eye candy charts nothing in the way of an Atlantic onslaught either 

Dry at least and with a bit of luck some chilly nights 

Originally Posted by: Gooner 

A few just not well supported:

 

 

 

 


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

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Sean Moon

Magical Moon

www.magical-moon.com

Solar Cycles
31 December 2018 09:08:13

Still not much in the way of excitement for cold it has to be said but with the SSW technically occurring tonight I suppose the fun and games will start arriving in the output thereafter, or not as the case maybe. 😁

Sasa
  • Sasa
  • Advanced Member
31 December 2018 09:12:38
We are sandwiched between two very stubborn high pressures. One over British isles and the other over eastern Russia hence any disturbances and cold air will be funnelled towards eastern Europe all the way to Greece. I think this will remain the case until high over British isles collapses towards the south east and open the gate to NW and the Atlantic towards mid month. Thereafter its anybody's guess.

I cannot see how we can benefit form the situation in the near term other then no rain.


Kingston Upon Thames
Bertwhistle
31 December 2018 09:23:36

This morning GFS is now catching up with the ECM keeping high pressure over the UK until the 11th 12th after that if you want -15 850s go to Athens....

Originally Posted by: roadrunnerajn 

That may well be the story if you only consider the Op- and what an incredible HP it is too, with over a week of SLP above 1040mb. I'm not convinced.

Look at the whole ensemble output in GFS; here's London's: 

https://www.theweatheroutlook.com/twodata/chart.aspx?chart=/charts/gefs/gefsens850london0.png?cb=901

Now, disregarding the possibly inflated snow row output around 11th of 9 runs, there are other signals starting to be picked up that look good.

4 Ps now dip below -10 at 850, for example.

There are several encouraging outputs: P2, P6, P10, P12, P14, P17 all look useful for cold setups before 10days.

Some really cold outcomes are setting up by T+180 (still out of reliable range, but certainly not FI).

There is remarkable consistency between some of these: P6 and P12 look like twins at about 180, and both maintain the broad, long-fetch easterly tendency to late in the run.

P6 at 180: https://www.theweatheroutlook.com/twodata/chart.aspx?chart=///www.theweatheroutlook.com/charts/gefs/6_180_850tmp.png?cb=411

P12 at 180: https://www.theweatheroutlook.com/twodata/chart.aspx?chart=///www.theweatheroutlook.com/charts/gefs/12_180_850tmp.png?cb=156

P6 at 264: https://www.theweatheroutlook.com/twodata/chart.aspx?chart=///www.theweatheroutlook.com/charts/gefs/6_264_850tmp.png?cb=915

P12 at 264:https://www.theweatheroutlook.com/twodata/chart.aspx?chart=///www.theweatheroutlook.com/charts/gefs/12_264_850tmp.png?cb=745

Something's definitely afoot; GEFS may not have the timings right but as Steve M explained, the models don't all have the same capabilities at long range.

 


Bertie, Itchen Valley.

Retire while you can still press the 'retire now' button.

Gooner
31 December 2018 09:29:29

I don't see the point in this reset business , wet dull and windy ……..why would anyone  want that ??

We are chasing an area of HP , we have one that will give us chilly temps and dry weather , hopefully it will then wriggle itself into a favourable positio


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



Bertwhistle
31 December 2018 09:30:50

As for ECM: despite modelling a gentle but persistent westward shift of the HP between T+72 and T+144, https://www.theweatheroutlook.com/twodata/chart.aspx?chart=///www.theweatheroutlook.com/charts/ecm/144_mslp850.png?cb=253

it then inexplicably collapses the HP S/ SEwards between 168 and 192, (yet allowing cooler 850s in), meaning any Nly outbreak is prevented by new HP development from the SW. It's probably just me, but that looks odd to me.


Bertie, Itchen Valley.

Retire while you can still press the 'retire now' button.

Rob K
31 December 2018 09:31:03

Very high pressure dominated with nearly a week of >1040mb for much of the UK!


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

four
  • four
  • Advanced Member
31 December 2018 09:32:46

HP Dominated throughout , very few eye candy charts nothing in the way of an Atlantic onslaught either 

Dry at least and with a bit of luck some chilly nights 

Originally Posted by: Gooner 



If only it were July.
It looks pleasant though with mild(ish) days and near freezing nights.
We are getting through the potentially storm part of winter without damaging gales or floods - I like.


The Beast from the East
31 December 2018 09:34:37

Ens mean in line with the op

Nothing of any interest for cold fans but useable dry weather 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Bertwhistle
31 December 2018 09:50:38

Ens mean in line with the op

Originally Posted by: The Beast from the East 

That's only true until the 7th Beast, and then not again until the very end.

In between, it's lower all the way- up to 6 degrees for a time at 850.

https://www.theweatheroutlook.com/twodata/chart.aspx?chart=/charts/gefs/gefsens850london0.png?cb=237

 

 


Bertie, Itchen Valley.

Retire while you can still press the 'retire now' button.

Shropshire
31 December 2018 09:50:52

Ens mean in line with the op

Nothing of any interest for cold fans but useable dry weather 

Originally Posted by: The Beast from the East 

The OP was the mildest member of the ensembles at day 10, so a good number of members must have the High further North although still generally on top of us.

The METO call for unsettled weather for the early part of next week now looks under threat unless there is a considerable flip in the NWP.

Looking ahead I'm struck by how low heights are to the NE/N in ensembles so as things stand the possible route to a change could be systems eventually sinking into Europe with pressure rising to the West.


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.
Caz
  • Caz
  • Advanced Member
31 December 2018 09:52:08

OT - sorry!  The CET prediction thread is now open for anyone wanting to join in this fun, lighthearted competition.  No expertise required!  Sense of fun essential! 

http://www.theweatheroutlook.com/twocommunity/default.aspx?g=posts&t=19567


Market Warsop, North Nottinghamshire.

Join the fun and banter of the monthly CET competition.

Bertwhistle
31 December 2018 09:53:01

 

The OP was the mildest member of the ensembles at day 10, so a good number of members must have the High further North although still generally on top of us.

The METO call for unsettled weather for the early part of next week now looks under threat unless there is a considerable flip in the NWP.

Looking ahead I'm struck by how low heights are to the NE/N in ensembles so as things stand the possible route to a change could be systems eventually sinking into Europe with pressure rising to the West.

Originally Posted by: Shropshire 

That's exactly what some of the Ps are showing in GEFS and also what was within the prognosis Steve Murr's link led to.


Bertie, Itchen Valley.

Retire while you can still press the 'retire now' button.

David M Porter
31 December 2018 09:53:54

OT - sorry!  The CET prediction thread is now open for anyone wanting to join in this fun, lighthearted competition.  No expertise required!  Sense of fun essential! 

http://www.theweatheroutlook.com/twocommunity/default.aspx?g=posts&t=19567

Originally Posted by: Caz 

Thanks Caz.


Lenzie, Glasgow

"A body of men holding themselves accountable to nobody ought not to be trusted by anybody." – Thomas Paine

White Meadows
31 December 2018 10:03:32



If only it were July.
It looks pleasant though with mild(ish) days and near freezing nights.
We are getting through the potentially storm part of winter without damaging gales or floods - I like.

Originally Posted by: four 

Yes indeed. Why some people yearn for damaging gales and life ruining floods is beyond me. 

David M Porter
31 December 2018 10:06:17

I don't see the point in this reset business , wet dull and windy ……..why would anyone  want that ??

We are chasing an area of HP , we have one that will give us chilly temps and dry weather , hopefully it will then wriggle itself into a favourable positio

Originally Posted by: Gooner 

Indeed. After going through the awful winters of 2013-14 and 2015-16, both of which saw almost uninterrupted wet & stormy weather, I think anyone who wants that type of weather over what we have at the moment ought to be careful what they wish for.

Wrt the model output, as Ian noted above, the MetO's forecast from recent days of a change to more unsettled weather next week is now looking to be on something of a wobbly nail unless there is a change in the output. The GFS in consecutive op runs a few days ago was showing the atlantic taking over not long after New Year, but in the last day or two has backtracked from this somewhat and now seems to be singing from the same hymn sheet as ECM generally speaking.


Lenzie, Glasgow

"A body of men holding themselves accountable to nobody ought not to be trusted by anybody." – Thomas Paine

Solar Cycles
31 December 2018 10:20:29
Until the model output picks up on these favourable background signals then all talk of potential cold Synoptics should remain in the realms of fantasy for the time being, this despite numerous pros/agencies projections as we move forward into January. I see nothing remotely interesting in the output for the foreseeable and until this limpet like U.K. high clears off elsewhere then the benign/boring conditions will continue.
Gooner
31 December 2018 10:20:42

This could well end up favourable 

EDIT maybe not but there were the slightest of hints of a push towards Greenland, as always need to see GEFS to get a better idea of the run


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



Gandalf The White
31 December 2018 10:45:55

Yes indeed. Why some people yearn for damaging gales and life ruining floods is beyond me. 

Originally Posted by: White Meadows 

But then the same applies to freezing cold with ice and snow. Burst pipes, traffic accidents, increased illness and mortality rates amongst the old and infirm, higher heating bills, misery for the homeless.

The answer is that people enjoy different kinds of weather. Personally I'll take whatever comes along, if only because there's not a lot of choice.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



Gooner
31 December 2018 10:48:55

Deep FI ends with a big cold push from the North


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



Gandalf The White
31 December 2018 10:50:08

 

This could well end up favourable 

EDIT maybe not but there were the slightest of hints of a push towards Greenland, as always need to see GEFS to get a better idea of the run

Originally Posted by: Gooner 

Experience and a look at historical charts shows that stable patterns can shift within 24-48 hours.  At the moment I'd say retrogression was about as likely as the high sinking. A burst of WAA in mid-Atlantic would help, of course.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



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