The Weather Outlook

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ballamar
27 October 2018 07:10:10
http://www.wetterzentrale.de/maps/ECMOPEU00_240_1.png 

The pattern is still there today cold turn out to be a bitter November

nsrobins
27 October 2018 07:29:35

 

 

 

I still se above average temps from December, Jan and Feb? what's changed!?  What was CFS going for previously for Feb to March 2019??

Originally Posted by: tallyho_83 

CFS, or rather the ‘moy’ mean anomalies, of all the ingredients in the attempt to predict a seasonal time range, is pretty useless. It wobbles from issue to issue with a variability that makes a chocolate teapot look decent material for the base of a sauna.

You’re much better off taking a blend of all the signals and data, or better still let Gavin P do it for you in his excellent products. No better person on the net IMO for attempting seasonal forecasting.


Neil

Fareham, Hampshire 28m ASL (near estuary)

Stormchaser, Member TORRO

Solar Cycles
27 October 2018 07:45:07

 

 

CFS, or rather the ‘moy’ mean anomalies, of all the ingredients in the attempt to predict a seasonal time range, is pretty useless. It wobbles from issue to issue with a variability that makes a chocolate teapot look decent material for the base of a sauna.

You’re much better off taking a blend of all the signals and data, or better still let Gavin P do it for you in his excellent products. No better person on the net IMO for attempting seasonal forecasting.

Originally Posted by: nsrobins 

Coukdnt agree  more Neil. πŸ™‚

Gavin D
27 October 2018 08:07:37

Wednesday looks to be the transition day from the cold to milder temps some parts of the SE could be around 17c by Friday

ukmaxtemp.thumb.png.ac1a3754d7c997ffd36909d336fecad1.png1481075043_ukmaxtemp(1).thumb.png.5a3d9998803d5d8bd7a9ce6b5c01744b.png

1665022138_ukmaxtemp(2).thumb.png.5343b9183403dfde735d88b0b79709a6.png1533959178_ukmaxtemp(3).thumb.png.3b4df968a396104eff578b6c4a409263.png

DEW
  • DEW
  • Advanced Member
28 October 2018 07:38:44

Assorted depressions around so unsettled from time to time and place to place. The ones to watch seem to be Tue 30th moving up the North Sea, and more conventionally keep an eye out for FI Wed 7th and Mon 12th

Edit - apologies for being parochial - this Friday, the 2nd, also lively in the north


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

Chichester 12m asl

Solar Cycles
28 October 2018 07:48:16
Next weekend looking particularly mild and wet away from Scotland and N. Ireland so could end up being a rather soggy bonfire night for many. Longer term signals are mixed heights over Scandinavia could either build towards Greenland ( very small chance ) or slowly sink SE ( the form horse for now ) leaving us in a rather mild and wet first half of November.
Gavin D
28 October 2018 09:20:24

ECM has a stormy and warm Saturday next week a complete contrast to yesterday!

ECMOPEU00_144_2.thumb.png.5b6466e9116e87fedabcaf5cafed8d24.pngECMOPUK00_144_2.thumb.png.37257c7e8c37aeb18b99d5b75670e1c9.png

doctormog
28 October 2018 09:32:40
There has been and continues to be a large level of uncertainty at that time range. For that reason single operational runs should not really be used in isolation to try to forecast the weather at that range.

http://modeles.meteociel.fr/modeles/gens/ecmwf/graphe_ens3.php?mode=1&x=&y=&run=0&ville=Londres&lat=51.5085&lon=-0.12574&runpara=0 

It’s not an unusual situation but unless there is a consistent trend in op runs over a few days then the 7 day (or even 5 day) plus charts are little more than very clever and quite often tantalising glimpses of what might happen (as opposed to what is likely).


Gavin D
28 October 2018 11:02:36

Not bad for November

GFSOPEU06_324_2.thumb.png.ca72871e1c24a1f38746f4ab2092031f.pngGFSOPEU06_348_2.thumb.png.0b1e04c433ada7ed31895f92001367d1.pngGFSOPEU06_372_2.thumb.png.d30b8b6d23494797a030deefe111f114.png

 

KevBrads1
28 October 2018 11:08:22

Not bad for November

GFSOPEU06_324_2.thumb.png.ca72871e1c24a1f38746f4ab2092031f.pngGFSOPEU06_348_2.thumb.png.0b1e04c433ada7ed31895f92001367d1.pngGFSOPEU06_372_2.thumb.png.d30b8b6d23494797a030deefe111f114.png

 

Originally Posted by: Gavin D 

2m temperatures are not that impressive though


MANCHESTER SUMMER INDEX for 2021: 238

Timelapses, old weather forecasts and natural phenomena videos can be seen on this site

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tallyho_83
28 October 2018 12:32:55

06Z ENSEMBLES - THE GFS Op is A MILD outlier perhaps? Shooting up to +13c @ 850hpa uppers.

But colder at the surface!?

 


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

---------------------------------------

Sean Moon

Magical Moon

www.magical-moon.com

doctormog
28 October 2018 13:39:38

I may as well not have bothered writing my previous post Gavin.


Saint Snow
28 October 2018 14:02:00

I may as well not have bothered writing my previous post Gavin.

Originally Posted by: doctormog 

 

I feel like that many times in UIA


Martin

Home: St Helens (26m asl) Work: Manchester (75m asl)

A TWO addict since 14/12/01

"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."

Aneurin Bevan

doctormog
28 October 2018 14:08:12

 

 

I feel like that many times in UIA

Originally Posted by: Saint Snow 

Surely you mean all the time? 

The 06z GFS ensemble set continue to show good agreement for the next three or four days with a marked divergence at that point. The significance? It is likely many of the operational runs in the next day or two will show differing scenarios for the first week or so of November.

It looks like things will often be cyclonic/unsettled but whether that is mild or average or (and less likely) cool, and whether it will be breezy or stormy is very uncertain.


noodle doodle
28 October 2018 15:47:01
A stormy Saturday coming up is not wanted, being the nearest sat to the 5th a lot of public firework displays are planned, but high winds will see them called off 😞
JACKO4EVER
28 October 2018 15:56:17
Yes could be quite stormy next weekend if some output is to be believed. In the meantime some rain in places, not overly mild or cold.
Gavin D
28 October 2018 16:51:18

This might stop a few from letting off those annoying bloody fireworks 

gfs-0-132.thumb.png.0892fda11785698611c7ffadd89b2c5a.pnggfs-0-186.thumb.png.6a79fb30614d1ef184e3ba5b094e8706.pnggfs-0-234.thumb.png.1e609dd8f3f554e15c05ff81bfb8aedf.pnggfs-0-276.thumb.png.2162c34adf22fb1b3379ea250fbedaa4.png

tallyho_83
28 October 2018 19:44:05

Yes could be quite stormy next weekend if some output is to be believed. In the meantime some rain in places, not overly mild or cold.

Originally Posted by: JACKO4EVER 

 

If this was December, Jan or Feb? - SNOW?

 


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

---------------------------------------

Sean Moon

Magical Moon

www.magical-moon.com

Caz
  • Caz
  • Advanced Member
29 October 2018 05:08:49

I may as well not have bothered writing my previous post Gavin.

Originally Posted by: doctormog 

I found your post useful and informative as always and I think most of us know who the unbiased posters are.  So it was worth posting Doc!  


Market Warsop, North Nottinghamshire.

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Gavin D
29 October 2018 08:04:48

Saturday once again shows the potential for some pretty warm air heading our way along with heavy rain and strong winds

ECM

ECMOPEU00_120_2.thumb.png.e3a879f57b879c2997a4a30f2283b035.png

UKMO

UKMOPEU00_120_1.thumb.png.77e1c2151a8ac6b47cffce80348eb363.png

DEW
  • DEW
  • Advanced Member
29 October 2018 08:38:32

This is shaping up for a discussion about whether charts or ensembles are the most reliable predictors. Probably you need to analyse both, but if time presses? Ensembles give you a quick look at a variety of outcomes, but without any background; chass show what might develop and where, but working through all the perturbations for the next 10 days is a bit much, even for weather freaks, so chart enthusiasts let the professionals do that and concentrate on the op run.

Myself I prefer charts, and reckon that consistent op runs viewed daily across different models are reliable, even into FI, and offer a more interesting overall picture.


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

Chichester 12m asl

Tim A
29 October 2018 11:48:17
Quite an impressive chart for October (this morning 6Z)

http://www.wetterzentrale.de/maps/GFSOPEU06_0_1.png 

http://www.wetterzentrale.de/maps/GFSOPEU06_0_2.png 

Not often that you see sub -5c 850 hpa's in an easterly drift in October. Was enough for scattered snow shrs overnight and a slight dusting here and presumably further north and east as well.


Tim

NW Leeds

187m asl

Β My PWS 

Gandalf The White
29 October 2018 14:32:42

This is shaping up for a discussion about whether charts or ensembles are the most reliable predictors. Probably you need to analyse both, but if time presses? Ensembles give you a quick look at a variety of outcomes, but without any background; chass show what might develop and where, but working through all the perturbations for the next 10 days is a bit much, even for weather freaks, so chart enthusiasts let the professionals do that and concentrate on the op run.

Myself I prefer charts, and reckon that consistent op runs viewed daily across different models are reliable, even into FI, and offer a more interesting overall picture.

Originally Posted by: DEW 

Yes, as you say, it can be time-consuming to look at all the output.  I tend to use the operational charts out to around day 5 and then look at the ensemble mean as well.  The usual mantra applies, i.e. Cross-model and ensemble support.

Of course nothing is foolproof; we've all seen ensemble suites and operational runs flip in unison when something changes upstream.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



Gavin D
29 October 2018 17:29:41

Saturday could be a fairly decent day the further east you are with temps into the low teens fairly widely

GFSOPUK12_123_2.thumb.png.d6e6bd43dee797f5d6c0444088af09ae.pngGFSOPUK12_123_4.thumb.png.abd06b8362c3ff9984077c756d93bfb4.pngGFSOPUK12_123_5.thumb.png.fa064508a2a4e6902b9a721c917e64fe.png

Fresher but mostly dry on Sunday away from Ireland

GFSOPUK12_147_2.thumb.png.27fe9bcbf328c74d1b0d958f70894d04.pngGFSOPUK12_147_4.thumb.png.ecea6bca13093f5eae29609d7841e81c.pngGFSOPUK12_147_5.thumb.png.560fa7c828dc8fef70b6a36e5be4de08.png

Gavin D
29 October 2018 17:36:02

Looking beyond the weekend we could be about to enter the longest spell of unsettled weather for quite some time with low pressure fairly dominant out to mid-November on 12z GFS 

GFSOPNH12_144_1.thumb.png.2d2bdaa193236a18db00b1cba08451e6.pngGFSOPNH12_198_1.thumb.png.4f33b71286d5ce033d83cc42557095e1.pngGFSOPNH12_312_1.thumb.png.445572a49457516dd53405cb2e5fcae2.pngGFSOPNH12_384_1.thumb.png.d9b9d509607b4bd6e8285aee732070fa.png

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