The Weather Outlook

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doctormog
09 November 2017 22:51:43
I must say I have found the GEM ens over a number of years to be rather useless compared with the GFS and ECM equivalents. The blocking in the midterm looks more interesting than the modelled “on the ground” conditions. With the former in place the latter could change.

http://www.wetterzentrale.de/maps/GFSOPEU18_75_2.png  Almost. Too early to be significant but rather “seasonal”


Polar Low
09 November 2017 23:18:12

Indeed M I think reading back the key word missing is potential at this stage

 

 

I think the majority of the evidence in the short and indeed medium to longer term points at northern blocking and largely chilly conditions. No big freeze is evident currently but some of the pieces of the jigsaw are there and therefore my interest is raised too.

It is certainly worth watching the charts at the moment because, even as things stand, it looks more interesting (and less depressing) than the past few winters. That could all change and I wouldn’t be massively surprised if it did, but as things stand the outlook is not without interest even if it is not wintry nirvana.

Originally Posted by: doctormog 

Gandalf The White
10 November 2017 00:34:50

">http://old.wetterzentrale.de/pics/MT8_London_ens.png

Originally Posted by: Rob K 

And wet. For all the talk of blocking, it doesn't look anticyclonic for our particular area!

Blocking doesn’t necessarily mean anticyclonic conditions for us though, does it?  All it means is that the jetstream and associated low pressure systems are being deflected.

ECM 12z ensemble for London shows good ensemble support for the op and a further tick down in temperatures beyond day 10.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



DEW
  • DEW
  • Advanced Member
10 November 2017 07:14:40

 

And wet. For all the talk of blocking, it doesn't look anticyclonic for our particular area!

Originally Posted by: some faraway beach 

 e.g. week 2 on http://www.wxmaps.org/pix/prec4.html 


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

Chichester 12m asl

doctormog
10 November 2017 07:23:29

 

 e.g. week 2 on http://www.wxmaps.org/pix/prec4.html 

Originally Posted by: DEW 

To be fair that high rainfall picture is based on the track of one low pressure system at around +260 hours on the GFS 00z op run http://www.wetterzentrale.de/maps/GFSOPEU00_264_1.png 

It is possible but a long way out.


Rob K
10 November 2017 09:28:01

 

And wet. For all the talk of blocking, it doesn't look anticyclonic for our particular area!

Originally Posted by: Gandalf The White 

Blocking doesn’t necessarily mean anticyclonic conditions for us though, does it?  All it means is that the jetstream and associated low pressure systems are being deflected.

ECM 12z ensemble for London shows good ensemble support for the op and a further tick down in temperatures beyond day 10.

 

Yes quite right. I was just pointing out that the blocking shown keeps the UK pretty cool and wet, by contrast to the ECM which in recent days has had more HP influence over us. 


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

Gavin D
10 November 2017 09:40:51

Perfect temps for the daffs in England and Wales 

Gandalf The White
10 November 2017 10:13:50

Perfect temps for the daffs in England and Wales 

Originally Posted by: Gavin D 

Let's play "spot the frontal boundary..."

Seriously, for the final week of November those values are very high for almost all of England and Wales. Where should we be for the time of year? Nearer 10C I think.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



Nordic Snowman
10 November 2017 10:36:13

Perfect temps for the daffs in England and Wales 

Originally Posted by: Gavin D 

The warmer, the better IMO!

Had enough cold weather in my time now and much prefer warmth and ideally, some sunshine. Looking forward for the spring already 


Bjorli, Norway

Website 

Russwirral
10 November 2017 12:17:08
I think the models have been having us on. Seriously - this happens every year.

Looks like The atlantic is waking up without us even realizing it.

Enjoy the next few days of dryness, Autumn proper is on its way.


White Meadows
10 November 2017 12:50:24

I think the models have been having us on. Seriously - this happens every year.

Looks like The atlantic is waking up without us even realizing it.

Enjoy the next few days of dryness, Autumn proper is on its way.

Originally Posted by: Russwirral 

a bit rash?

looks like pretty average November weather to me for the next week before turning increasingly ‘seasonal’ with frosts redeveloping on some nights. Anything else colder will be a bonus 

 

Bertwhistle
10 November 2017 13:09:37

Check out the whorl of very cold 850s that appears in Russia under HP at T +276 in the GFS op 06z; it drifts west under the high and intensifies to -30°C- not unusual in Russia in winter, but this is an isolated little pool, quite far south, only mid-November and intensely cold. Still there at the end of the run.


Bertie, Itchen Valley.

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

idj20
10 November 2017 13:15:12

I think the models have been having us on. Seriously - this happens every year.

Looks like The atlantic is waking up without us even realizing it.

Enjoy the next few days of dryness, Autumn proper is on its way.

Originally Posted by: Russwirral 



It's like what I said in here yesterday, as soon as cold air start to dig further south over North America, that'll then fire up the mid-Atlantic jet stream and put us here at the UK under a more mobile set up.  Northern blocking won't do much for us in terms cold/snow if it only serves to steer low pressure systems towards the UK rather than to the north - which happened in that god-awful winter of 2014.
  If I want to feel hopeful about actual wintry weather come our way, I need to see warm air shift northwards over North America and onto Canada to displace the cold elsewhere in doing so.  
  Of course, no two set ups are exactly alike but that's my take on things.


Home location: Folkestone Harbour.
Rob K
10 November 2017 13:16:12

a bit rash?

looks like pretty average November weather to me for the next week before turning increasingly ‘seasonal’ with frosts redeveloping on some nights. Anything else colder will be a bonus 

 

Originally Posted by: White Meadows 

 

Yes looks like "proper" autumn weather returning - wet and on the cool side, unlike many recent autumns.

http://old.wetterzentrale.de/pics/MT8_London_ens.png


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

Bolty
10 November 2017 13:20:56

Perfect temps for the daffs in England and Wales 

Originally Posted by: Gavin D 

I'll take that. 15-16°C in late November would certainly be a generous treat from the weather gods! 


Scott

Blackrod, Lancashire (4 miles south of Chorley) at 156m asl.

My weather station 

Russwirral
10 November 2017 13:34:18

a bit rash?

looks like pretty average November weather to me for the next week before turning increasingly ‘seasonal’ with frosts redeveloping on some nights. Anything else colder will be a bonus 

 

Originally Posted by: White Meadows 

 

To be fair - ive just checked out the GEFS, and it seems like this mornings run is perhaps of Milder Outlier inclinations.

 

Alot of clustering around the 0* to -5*c @850 range, which it has been all week.

 

It does appear alot more unsettled though, and the northern blocking less in control.  I suppose its the latter that was really lighting the fire on these boards despite the absence of real cold.  We know what that kinda setup can deliver - given a bit of patience.

 

 

 

 


Gooner
10 November 2017 15:42:23

Nordic ....how are you doing mate ? All good?

 

you should know better than to get excited by charts two weeks away . Lol 

 

I know you’ve seen more snow in a week than I’ve seen in a lifetime but us snow starved TWOers are desperate for a severe winter , please don’t join the mild crew 


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



JACKO4EVER
10 November 2017 16:58:17
Evening all.

Signs of the Atlantic finally wakeing up, could be quite a cool and wet end to the month if some output is to be believed. However if any cold shot into the States produces cyclogenesis then we could be in for a rough ride- we need the jet to play ball to get any real cold to these shores, though still being late Autumn we have plenty of fun and games to get through yet.

Russwirral
10 November 2017 16:59:45
aaaaaannnnnnd .....

we go full circle.

Scandi High now in the mix and a reload from the north.

Much better run.


Rob K
10 November 2017 17:06:04

I'm struggling to see which charts posters are looking at who are saying "the Atlantic is waking up". If there's one thing that seems to characterise the model output for several days now, it is a quiet Atlantic. Albeit that any troughs that are around tend to want to sit around the UK.

The 12Z GFS for example has another mid-Atlantic ridge at 168hrs transferring to a Scandi high by 240hrs and then retrogressing to a fully plumped up Greenland High by 360hrs. Hardly the stuff of a roaring Atlantic jet.

 

Likewise the overnight ECM has heights rising over Iceland and Greenland by 240, and even the UKMO out to 144 seems to show heights building north. So I'm a bit 


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

Ally Pally Snowman
10 November 2017 17:08:00

Very nice GFS 12z tonight , consistent blocking , weather gradually getting colder and colder. PV shot to pot.

 

 


Bishop's Stortford 85m ASL.
Russwirral
10 November 2017 17:21:40

I'm struggling to see which charts posters are looking at who are saying "the Atlantic is waking up". If there's one thing that seems to characterise the model output for several days now, it is a quiet Atlantic. Albeit that any troughs that are around tend to want to sit around the UK.

The 12Z GFS for example has another mid-Atlantic ridge at 168hrs transferring to a Scandi high by 240hrs and then retrogressing to a fully plumped up Greenland High by 360hrs. Hardly the stuff of a roaring Atlantic jet.

 

Likewise the overnight ECM has heights rising over Iceland and Greenland by 240, and even the UKMO out to 144 seems to show heights building north. So I'm a bit 

Originally Posted by: Rob K 

 

Hi Rob

 

The 6z was  a wash of Low pressures after low pressures, and all the Fronts you could wish for.  This picture tells the stroy well:

 

Netweather GFS Image

 

Followed by 

 

Netweather GFS Image

 

There was a post on the other side which im struggling to find which showed a very wet picture for the 7 days + bracket.

 

This seems to have been replaced by a set of charts much more in keeping with what we were seeing the other day.


Solar Cycles
10 November 2017 17:27:52
The GFS and UKMO appear to be invited to different parties, the former bringing lots of goodies whilst the latter just a solitary can of special brew, which no one likes. Lots of volatility as ever when Northern blocking is being modelled.
The Beast from the East
10 November 2017 17:32:01

I think we'll all be happy with Pert 3


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Gooner
10 November 2017 18:02:59

I’m with Rob , where is the Atlantic waking up . ?


Remember anything after T120 is really Just For Fun



Marcus

Banbury

North Oxfordshire

378 feet A S L



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