The Weather Outlook

Remove ads from site

DEW
  • DEW
  • Advanced Member
24 October 2017 07:36:20

Upland Britain seeing its first snow on 4 Nov? and a few lowland areas too, I shouldn't wonder, even if it's a bit early to settle

http://www.meteociel.fr/modeles/gefs_cartes.php?code=0&ech=264&mode=0&carte=

http://www.meteociel.fr/modeles/gefs_cartes.php?code=0&ech=288&mode=0&carte=

If only ...


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

Chichester 12m asl

doctormog
24 October 2017 08:14:17

Upland Britain seeing its first snow on 4 Nov? and a few lowland areas too, I shouldn't wonder, even if it's a bit early to settle

http://www.meteociel.fr/modeles/gefs_cartes.php?code=0&ech=264&mode=0&carte=

http://www.meteociel.fr/modeles/gefs_cartes.php?code=0&ech=288&mode=0&carte=

If only ...

Originally Posted by: DEW 

I think the 2nd of November would be more likely but I’d be surprised to see lowland snow, although at this range things could change in either direction.


David M Porter
24 October 2017 08:32:19

For all the talk there was a few days ago about another record warm Halloween being a possibility, it starting to look as though the models have kicked that one into touch.


Lenzie, Glasgow

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

nsrobins
24 October 2017 08:59:29

For all the talk there was a few days ago about another record warm Halloween being a possibility, it starting to look as though the models have kicked that one into touch.

Originally Posted by: David M Porter 

Such is the nature of a ball - it can be kicked in any direction. The only constant is the playing field itself (level or otherwise) 😉


Neil

Fareham, Hampshire 28m ASL (near estuary)

Stormchaser, Member TORRO

doctormog
24 October 2017 09:01:46

 

Such is the nature of a ball - it can be kicked in any direction. The only constant is the playing field itself (level or otherwise) 😉

Originally Posted by: nsrobins 

That and the fact that in terms of winter the opposition has seemingly “parked the bus” in front of our goalposts. 


Gavin D
24 October 2017 09:14:52
Still awaiting ECM 00z
Quantum
24 October 2017 09:21:37

For all the talk there was a few days ago about another record warm Halloween being a possibility, it starting to look as though the models have kicked that one into touch.

Originally Posted by: David M Porter 

Worth noting that in both spring and autumn (but probably more so spring), v cold and v warm are 'close' in synoptic terms. At this time of year a South easterly pattern is still warm whilst a north easterly pattern is cold. Both can be caused by HP retrogressing north westward. Therefore, in my opinion, it would be incorrect to describe this as any kind of model flip; and that in actuality signs of very warm weather at this time of year imply cold may also be round the corner (provided the warm air is not from maritime south westerlies).


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Arcus
24 October 2017 09:22:47

Still awaiting ECM 00z

Originally Posted by: Gavin D 

Due to unforeseen circumstances, the delivery of the ECMWF 00z High-Resolution Deterministic Forecast, the 00z Boundary Condition Forecast (Atmospheric and Wave) and ensemble forecast (Atmospheric and Wave) will unfortunately be delayed. At the moment we do not have an estimate for the delivery time, but we will keep you posted.

Our sincere apologies for the inconvenience caused by this delay.

EDIT: 00z ECM on its way out now.


Ben,

Nr. Easingwold, North Yorkshire

30m asl

idj20
24 October 2017 10:47:05

Putting the forecasting timeframe aside, I do think the uplands of Scotland will get to experience the first winter incursion of the season by this time next week. However, further south is likely to be cooler and fresher but with more in the way of brighter weather. If that helps to shift this dull, dank, muggy stuff here at Kent, that'll do me fine.


Home location: Folkestone Harbour.
Phil G
24 October 2017 11:44:26
GFS certainly paints a cool picture in just over a weekd time, maybe some wintriness away from coasts.

http://old.wetterzentrale.de/pics/Rtavn22217.gif 

http://old.wetterzentrale.de/pics/Rtavn2223.gif 

http://old.wetterzentrale.de/pics/Rtavn2221.gif 

Looking quite stormy down the North Sea as well with a bit of a surge and with another batch of high tides approaching, northern and eastern coasts may want to monitor.

http://old.wetterzentrale.de/pics/Rtavn2288.gif 

Hungry Tiger
24 October 2017 12:34:57

GFS certainly paints a cool picture in just over a weekd time, maybe some wintriness away from coasts.
http://old.wetterzentrale.de/pics/Rtavn22217.gif
http://old.wetterzentrale.de/pics/Rtavn2223.gif
http://old.wetterzentrale.de/pics/Rtavn2221.gif

Looking quite stormy down the North Sea as well with a bit of a surge and with another batch of high tides approaching, northern and eastern coasts may want to monitor.
http://old.wetterzentrale.de/pics/Rtavn2288.gif


Originally Posted by: Phil G 

That's been flagged up a few times now. Reckon it's almost nailed on.


Gavin S. FRmetS.

TWO Moderator.

Contact the TWO team - [email protected]

South Cambridgeshire. 93 metres or 302.25 feet ASL.



Bertwhistle
24 October 2017 14:47:18

True, the signal is still present. London currently awarded with 4 snow row days- more than Aberdeen- is that as unusual as it sound? But Inverness is peppered from the start of the month with up to 14 Ps on one day at the very start of November offering some of the white stuff.


Bertie, Itchen Valley.

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

Gavin D
24 October 2017 16:15:37

Short-lived northerly then high pressure arrives from the west bringing frost and fog

UKMOPEU12_120_1.thumb.png.c646b8aa0c160fb92d965bff6904fba6.pngUKMOPEU12_144_1.thumb.png.7d8d8f3820582f0f8fcccedb2fdf0ec3.png

doctormog
24 October 2017 16:23:25

Short-lived northerly then high pressure arrives from the west bringing frost and fog

UKMOPEU12_120_1.thumb.png.c646b8aa0c160fb92d965bff6904fba6.pngUKMOPEU12_144_1.thumb.png.7d8d8f3820582f0f8fcccedb2fdf0ec3.png

Originally Posted by: Gavin D 

I’m guessing you have not noticed the last several runs that have shown a much stronger northerly at the start of November? If anything the one you posted has just subtly intensified to what it is now. We’ll see shortly if the more potent northerly is still shown around the 2nd of November.


Gavin D
24 October 2017 16:28:27

 

I’m guessing you have not noticed the last several runs that have shown a much stronger northerly at the start of November? If anything the one you posted has just subtly intensified to what it is now. We’ll see shortly if the more potent northerly is still shown around the 2nd of November.

Originally Posted by: doctormog 

It looks a wee bit breezy to start November

xioni2
24 October 2017 16:34:52

GFS looks pretty unlikely to me, a very warm early and first half of Nov looks likely.

 

nsrobins
24 October 2017 16:42:46

GFS looks pretty unlikely to me, a very warm early and first half of Nov looks likely.

 

Originally Posted by: xioni2 

It’s started early I see 😊

Could you describe your reasoning behind why the impressively consistant signal for a N/NW flow next week and a more ‘seasonal’ feel (GFS and to an extent ECM) looks ‘pretty unlikely’. 


Neil

Fareham, Hampshire 28m ASL (near estuary)

Stormchaser, Member TORRO

doctormog
24 October 2017 16:43:29

GFS looks pretty unlikely to me, a very warm early and first half of Nov looks likely.

 

Originally Posted by: xioni2 

Based on the model output? 

The GFS and ECM data suggest otherwise and the UKMO output doesn’t reach that far but the Met Office forecast ties in with the former two models’ output. Are you using the tea leaf or I have a hunch model output? 


ballamar
24 October 2017 16:51:17

GFS looks pretty unlikely to me, a very warm early and first half of Nov looks likely.

 

Originally Posted by: xioni2 

watch out bergens will eat you

xioni2
24 October 2017 16:52:11

It’s started early I see 😊

Could you describe your reasoning behind why the impressively consistant signal for a N/NW flow next week and a more ‘seasonal’ feel (GFS and to an extent ECM) looks ‘pretty unlikely’. 

Originally Posted by: nsrobins 

Not sure what you mean by 'started early', but I'll give it a go.

GFS seems to forecast poorly the tropical forcing in early November, it just has too much rainfall in the tropical Western Hemisphere and as a result it's very amplified over both N.America and Europe.

ECMWF and GEM (ensembles) seem more reasonable and less biased in their tropical forcing and they are trending towards a warmer outcome for the UK (for the first 10-15 days of Nov).

No certainties as usually with weather, but I think it's more likely that GFS will eventually trend much warmer.

doctormog
24 October 2017 17:03:35

 

Not sure what you mean by 'started early', but I'll give it a go.

GFS seems to forecast poorly the tropical forcing in early November, it just has too much rainfall in the tropical Western Hemisphere and as a result it's very amplified over both N.America and Europe.

ECMWF and GEM (ensembles) seem more reasonable and less biased in their tropical forcing and they are trending towards a warmer outcome for the UK (for the first 10-15 days of Nov).

No certainties as usually with weather, but I think it's more likely that GFS will eventually trend much warmer.

Originally Posted by: xioni2 

Even allowing for the colder weather in the ECM 00z op run at the start of November I am still failing to see the evidence for a “very warm” first half of November. Could you share the data? 


xioni2
24 October 2017 17:22:09

Even allowing for the colder weather in the ECM 00z op run at the start of November I am still failing to see the evidence for a “very warm” first half of November. Could you share the data? 

Originally Posted by: doctormog 

You'll probably have it next week 

I'd actually love a northerly and some nice frosts, but I just thought I should mention that GFS is showing a less likely evolution based on the potential drivers. Also EC op at days 7-10 is less relevant anyway.

Russwirral
24 October 2017 17:38:42

These charts with their current tasty FI smell exaclty where we left off last years winter.  Lovely charts appearing, then dying back, then a big flip over to something very wintry, before over the remaining runs to T+0 watering down to light blues/greens smothering the country.

 

I like the whole HP to the north, but after several years of leading to nothing, im going to wait to see snow falling before getting excited proper,


DEW
  • DEW
  • Advanced Member
25 October 2017 06:13:49

I like the whole HP to the north, but after several years of leading to nothing, im going to wait to see snow falling before getting excited proper,

Originally Posted by: Russwirral 

Indeed, GFS is already edging that northern plunge to the east and ECM never really believed in it anyway

http://www.meteociel.fr/modeles/gfse_cartes.php?mode=0&ech=204

http://www.meteociel.fr/modeles/ecmwf.php?ech=216&mode=1&map=0&type=0&archive=0

Now why does that look familiar?


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

Chichester 12m asl

Remove ads from site