The Weather Outlook

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rayjp
28 August 2011 18:13:56

Some have said this summer that the effects of NAO/AO/PDO on the N Hemisphere atmospheric pattern are better understood/more straightforward in winter than they are in summer.

Perhaps this is reflected in the ability of CFS to predict the broad scenario in winter when compared to in summer; it was rather good for (at least part of) last winter but poor for nearly all of this summer. Obviously that tendency needs to be noted across numerous years before it can be considered to really exist - anyone viewed the output for several years now who can remember how the performance has varied?

Originally Posted by: Stormchaser 

Just a quick question as I am not on the ball with publication of these charts.
How often are they produced.

Gavin D
28 August 2011 18:36:56

Every 2 day's they are updated.

Snow Wolf
29 August 2011 10:50:01

With September NWP models looking to be unsettled and not too anomalously warm, I wonder if Gaze mild winter hints will take a knock?

Gandalf The White
29 August 2011 11:13:44

Some have said this summer that the effects of NAO/AO/PDO on the N Hemisphere atmospheric pattern are better understood/more straightforward in winter than they are in summer.

Perhaps this is reflected in the ability of CFS to predict the broad scenario in winter when compared to in summer; it was rather good for (at least part of) last winter but poor for nearly all of this summer. Obviously that tendency needs to be noted across numerous years before it can be considered to really exist - anyone viewed the output for several years now who can remember how the performance has varied?

Originally Posted by: Stormchaser 

I recall looking at the forecast accuracy graphs which support this - the winter pattern is generally more predictable than the summer one, presumably because the jetstream is more dominant in winter.  I think the same applies to the southern hemisphere forecast accuracy, IIRC.


Location: South Cambridgeshire

130 metres ASL

52.0N 0.1E



Gavin P
29 August 2011 11:13:55

With September NWP models looking to be unsettled and not too anomalously warm, I wonder if Gaze mild winter hints will take a knock?

Originally Posted by: Snow Wolf 

No, because there is no connection between September weather and the following winter. Mild or cold winters can follow settled or unsettled Septembers.


Rural West Northants 120m asl

Short, medium and long range weather forecast videos @ https://www.youtube.com/user/GavsWeatherVids

Gavin D
29 August 2011 11:14:59

Yesterday's update has brought very little change with October, November and December all below average for precipitation for almost everywhere, January is below for all but Scotland and February is on the average.

As for temperatures there's also very little change with September to December below average for all except Scotland in October, January is below average for Scotland, Northern England and Ireland everywhere else is Normal, February is above normal for everyone.

I think a dry Autumn and Winter is looking on the cards, this could cause drought problems next year if we struggle to get sufficient rain fall over this period

Snow Wolf
29 August 2011 11:30:14

With September NWP models looking to be unsettled and not too anomalously warm, I wonder if Gaze mild winter hints will take a knock?

Originally Posted by: Gavin P 

No, because there is no connection between September weather and the following winter. Mild or cold winters can follow settled or unsettled Septembers.

Originally Posted by: Snow Wolf 

My point was regarding Brian's viewpoint about if there was to be an anomalously warm September he said

"A mild winter overall (I know many people disagree with this)"

LeedsLad123
29 August 2011 11:35:00

With September NWP models looking to be unsettled and not too anomalously warm, I wonder if Gaze mild winter hints will take a knock?

Originally Posted by: Gavin P 

No, because there is no connection between September weather and the following winter. Mild or cold winters can follow settled or unsettled Septembers.

Originally Posted by: Snow Wolf 

Just looking back at some weather records and in 1962 the hottest day of the year was in September, and we all know what followed in winter, much like September 2006 was the warmest on record, followed by a mild winter.


Whitkirk, Leeds - 85m ASL.
Brian Gaze
29 August 2011 11:55:09

With September NWP models looking to be unsettled and not too anomalously warm, I wonder if Gaze mild winter hints will take a knock?

Originally Posted by: Snow Wolf 

There have been no mild winter hints at all from me.


Brian Gaze

Berkhamsted

TWO Buzz - get the latest news and views 

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

Snow Wolf
29 August 2011 14:20:24

With September NWP models looking to be unsettled and not too anomalously warm, I wonder if Gaze mild winter hints will take a knock?

Originally Posted by: Brian Gaze 

There have been no mild winter hints at all from me.

Originally Posted by: Snow Wolf 

#104 Posted : 06 August 2011 13:03:01

 Increased solar activity may well reduce the chances of colder weather this winter.

Brian Gaze
Berkhamsted

#226 Posted : 26 August 2011 21:23:38

 Could be a Bartlett / Eurotrash dominated winter? 1988 came after a run of mostly colder winters too.

Brian Gaze
Berkhamsted

sriram
29 August 2011 14:55:49

mild winter on the cards


Sriram

Sedgley, West Midlands ( just south of Wolverhampton )

162m ASL

Matty H
29 August 2011 14:57:53

mild winter on the cards

Originally Posted by: sriram 

Hopefully


Yate, Nr Bristol

TBFTEIARBSC

John S2
29 August 2011 14:57:58

With September NWP models looking to be unsettled and not too anomalously warm, I wonder if Gaze mild winter hints will take a knock?

Originally Posted by: Gavin P 

No, because there is no connection between September weather and the following winter. Mild or cold winters can follow settled or unsettled Septembers.

Originally Posted by: Snow Wolf 

The connection might not be strong, but I believe it exists. Septembers where the general circulation pattern could be described as anticyclonic southwesterly are more likely to be followed by mild winters than cyclonic Septembers. This cannot be considered a 'rule', but it would be a factor I would take into account if making a LRF guess/prediction.

LeedsLad123
29 August 2011 15:09:07

mild winter on the cards

Originally Posted by: sriram 

I'll have to immigrate then.


Whitkirk, Leeds - 85m ASL.
Snow Wolf
29 August 2011 15:49:20

mild winter on the cards

Originally Posted by: LeedsLad123 

I'll have to immigrate then.

Originally Posted by: sriram 

Why where do you live now?

LeedsLad123
29 August 2011 15:58:19

mild winter on the cards

Originally Posted by: Snow Wolf 

I'll have to immigrate then.

Originally Posted by: LeedsLad123 

Why where do you live now?

Originally Posted by: sriram 

I must immgirate from the UK, I can't bear another zonal trash winter!


Whitkirk, Leeds - 85m ASL.
Gavin D
29 August 2011 16:32:24

mild winter on the cards

Originally Posted by: sriram 

Bring it on the milder the better

Interesting final line from Philip Avery today in the BBC Monthly weather forecast

Next week

After what seems like many weeks of autumnal weather in the summer, might we see some summer weather as we move into the autumn? Surely that can't be it, can it?

Are the BBC /Met Office giving the first hint's of a Mild Dry Autumn? Wouldn't be surprised with what the CFS charts have been showing, the Energy companies will be fuming if this happens there plans of high profits could go down the toilet.

llamedos
30 August 2011 09:24:33

mild winter on the cards

Originally Posted by: LeedsLad123 

I'll have to immigrate then.

Originally Posted by: Snow Wolf 

Why where do you live now?

Originally Posted by: LeedsLad123 

I must immgirate from the UK, I can't bear another zonal trash winter!

Originally Posted by: sriram 

I think the word that Snow Wolf was hoping for, was emigrate


"Life with the Lions"

TWO Moderator

30 August 2011 09:45:17

I'll be keen to follow the deep LP systems that look for all intensive purposes to be sweeping in off the atlantic after this week is out, and seeing if they do indeed take a more southerly or northerly route across the UK and then seeing if this has a correlation on the coming winter.

I have noticed that thus far this year (for the most part) the LP systems that have fed in to the UK from the immediate west have weakened before they get to the UK, and have veered off to take a NW'sterly route, clipping Scotland, and some have taken a route to Iceland, and spun themselves out of energy...is this what blocking does ???

 

Lp that has encorached from the SW and Bay of Biscay area has for the most part tracked along the channel, and Northern France, clipping the south East, moved up the North Sea, and into Norway ??

So the bulk of the UK has pretty much been sandwiched in between, and perhaps this is why many areas have seen a large amount of dry conditions at least for the first half of the summer ???

Like I have said in a few previous posts im NO expert, im just relaying what I think I have seen :)

 

I'm noticing a change taking place though, at last in terms of what the GFS is predicting, in that the deep LP systems look as if they might not be taking the NW route, of Channel route, and instead passing over the middle of the country, will be intersting to see if this does come to pass, and then even more interesting to see if there IS  acorrelation come winter.

nouska
30 August 2011 11:39:57
You can get the CFS charts for France (includes most of England) on Meteociel. Latest update on 28/08 shows a big low over W Iberia for December so drier and cooler is indicated.

http://www.meteociel.fr/modeles/cfs.php?mois=12&annee=2011 

Gavin D
30 August 2011 12:14:29

You can get the CFS charts for France (includes most of England) on Meteociel. Latest update on 28/08 shows a big low over W Iberia for December so drier and cooler is indicated.

http://www.meteociel.fr/modeles/cfs.php?mois=12&annee=2011

Originally Posted by: nouska 

Hopefully, can't be doing with last years snow amounts again.

hedgehog4
30 August 2011 15:15:44

You can get the CFS charts for France (includes most of England) on Meteociel. Latest update on 28/08 shows a big low over W Iberia for December so drier and cooler is indicated.

http://www.meteociel.fr/modeles/cfs.php?mois=12&annee=2011

Originally Posted by: Gavin D 

Hopefully, can't be doing with last years snow amounts again.

Originally Posted by: nouska 


Don't forget though, the average days of rainfall in December in the UK is 15, so a drier than average December would mean 9 or 10, meaning snowfall is still virtually garunteed if it is cold, plus lasy years December was very dry aswell  

Steam Fog
30 August 2011 15:20:03
😕 Drier and cooler than average is just what last December was so assuming it came about again this December why would it alter the likely snowfall?
patricia
30 August 2011 15:23:28

 

December 2010 was very dry here with only 8 days of rain and 4 of those were minimal 0.3mm

LeedsLad123
30 August 2011 15:28:37

Both December and January were dry here actually. Only 19 mm of rain in December and around 33 mm in January, both of which were very sunny in these parts.


Whitkirk, Leeds - 85m ASL.

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