Remove ads from site

White Meadows
20 October 2014 16:12:39

SAI = Snow Advance Index. The rate of change of snow cover over Europe and Asia south of the 60 degrees line of latitiude. (Not the extent, but the rate of increase of the extent.)

A Dr Judah Jones has been studying this and found evidence that the faster the snow coverage in this area increases during October the more likely that the winter Arctic Oscillation will be negative (ie that winter will feature northern blocking).

Originally Posted by: some faraway beach 


And no doubt most of which will have melted back by mid November. Didn't we experience this in 2012. Signs were promising throughout October but the snow melt began early Nov and retreated to poor coverage by the time our winter had started.

Saint Snow
20 October 2014 16:23:09


SAI = Snow Advance Index. The rate of change of snow cover over Europe and Asia south of the 60 degrees line of latitiude. (Not the extent, but the rate of increase of the extent.)

A Dr Judah Jones has been studying this and found evidence that the faster the snow coverage in this area increases during October the more likely that the winter Arctic Oscillation will be negative (ie that winter will feature northern blocking).

Originally Posted by: White Meadows 


And no doubt most of which will have melted back by mid November. Didn't we experience this in 2012. Signs were promising throughout October but the snow melt began early Nov and retreated to poor coverage by the time our winter had started.


Originally Posted by: some faraway beach 


 


Wasn't winter 2012/13 pretty good? OK, no lasting brass-monkeys spell, but 3 or 4 good falls IMBY, right into March



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
idj20
20 October 2014 16:31:12



SAI = Snow Advance Index. The rate of change of snow cover over Europe and Asia south of the 60 degrees line of latitiude. (Not the extent, but the rate of increase of the extent.)

A Dr Judah Jones has been studying this and found evidence that the faster the snow coverage in this area increases during October the more likely that the winter Arctic Oscillation will be negative (ie that winter will feature northern blocking).

Originally Posted by: Saint Snow 


And no doubt most of which will have melted back by mid November. Didn't we experience this in 2012. Signs were promising throughout October but the snow melt began early Nov and retreated to poor coverage by the time our winter had started.


Originally Posted by: White Meadows 


 


Wasn't winter 2012/13 pretty good? OK, no lasting brass-monkeys spell, but 3 or 4 good falls IMBY, right into March


Originally Posted by: some faraway beach 



That was when I kept having snowfalls on a Sunday! It then lead to actual blizzard type conditions over Southern England and more especially the Channel Islands on 11th March 2013.

Sorry, I'm steering this thread off course. Again. 


Folkestone Harbour. 
White Meadows
20 October 2014 16:34:00
Maybe my memory serves me wrong and in fact the snow cover looked impressive last October, only for a poor winter to follow.
sizzle
20 October 2014 17:07:30

Maybe my memory serves me wrong and in fact the snow cover looked impressive last October, only for a poor winter to follow.

Originally Posted by: White Meadows 

  and the way things are going I have this idea in my head we are in for another mild winter don't ask why just no signs of anything cold from what I have seen or read,

David M Porter
20 October 2014 17:35:12


Maybe my memory serves me wrong and in fact the snow cover looked impressive last October, only for a poor winter to follow.

Originally Posted by: sizzle 

  and the way things are going I have this idea in my head we are in for another mild winter don't ask why just no signs of anything cold from what I have seen or read,


Originally Posted by: White Meadows 


We're only half-way through the meteorogical autumn though- no need to be concerned yet IMO.


Maybe in about 4 weeks' time we might have a better idea of how December at least might shape up.


Lenzie, Glasgow

"Let us not take ourselves too seriously. None of us has a monopoly on wisdom, and we must always be ready to listen and respect other points of view."- Queen Elizabeth II 1926-2022
Gooner
20 October 2014 17:36:31

I don't see what snow cover out East has anything to do with us in the slightest.


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


sizzle
20 October 2014 17:39:36



Maybe my memory serves me wrong and in fact the snow cover looked impressive last October, only for a poor winter to follow.

Originally Posted by: David M Porter 

  and the way things are going I have this idea in my head we are in for another mild winter don't ask why just no signs of anything cold from what I have seen or read,


Originally Posted by: sizzle 


We're only half-way through the meteorogical autumn though- no need to be concerned yet IMO.


Maybe in about 4 weeks' time we might have a better idea of how December at least might shape up.


Originally Posted by: White Meadows 

  very true .thanks for lifting my spirit up  mr porter,,

Brian Gaze
20 October 2014 18:53:07

A long fetch south westerly going east off the edge of the map:



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
GIBBY
21 October 2014 07:30:29

The ECM operational looks rather different today in an otherwise continuing westerly pattern. Here's today's report.


http://www.norton-radstockweather.co.uk/NEW-Model-Analysis(2859336).htm


Martin G
Kilmersdon Radstock Bath Somerset



Look up my New Facebook Weather Page  for all the latest up to the minute weather stories as they happen
turbotubbs
21 October 2014 07:46:10

Prolonged periods of one type of weather can often induce a feeling that nothing will ever change  - this could not be further from the reality. How often will the change be sudden, dramatic and here's the key poing - almost unheralded until its almost here. It happened over the summer with August letting the side down after a long dry, sunny spell. In the short term the current weather is interesting - bouts of rain and wind coming and going.


Plus - its October...

GIBBY
21 October 2014 08:36:24

It looks like the different ECM op at Day 10 was out of kilter with its ensemble pack as the 10 Day Mean keeps the North/South mild split going.


http://www.wetterzentrale.de/pics/Reem2401.gif


Martin G
Kilmersdon Radstock Bath Somerset



Look up my New Facebook Weather Page  for all the latest up to the minute weather stories as they happen
Rob K
21 October 2014 10:39:57


Prolonged periods of one type of weather can often induce a feeling that nothing will ever change  - this could not be further from the reality. How often will the change be sudden, dramatic and here's the key poing - almost unheralded until its almost here. It happened over the summer with August letting the side down after a long dry, sunny spell. In the short term the current weather is interesting - bouts of rain and wind coming and going.


Plus - its October...


Originally Posted by: turbotubbs 


I well remember the early stages of last winter on here. We were stuck in seemingly endless high pressure and as we began December the talk was of endless anticyclonic gloom and it possibly being the driest December on record.


http://www.theweatheroutlook.com/twocommunity/default.aspx?g=posts&t=12144&p=3


Well, we know how that turned out...! 


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
Essan
21 October 2014 11:26:07


Plus - its October...


Originally Posted by: turbotubbs 



And still no sign of record snow and cold ..... winter is over!



(there, I said it first )


Andy
Evesham, Worcs, Albion - 35m asl
Weather & Earth Science News 

Anyone who is capable of getting themselves made President should on no account be allowed to do the job - DNA
Gavin P
21 October 2014 13:33:06

Hi all


Here's today's video update;


Mild and unsettled end to October;


http://www.gavsweathervids.com/


October nailed on to yet another mild month!


Rural West Northants 120m asl
Short, medium and long range weather forecast videos @ https://www.youtube.com/user/GavsWeatherVids
Charmhills
21 October 2014 19:52:20



ECM looking chilly in fi.


Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.
Rob K
21 October 2014 21:37:14


ECM looking chilly in fi.


Originally Posted by: Charmhills 


 


Yes, that ought to allow a frost or two...


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
GIBBY
22 October 2014 07:32:34

A few chinks of interest for 'cold fans' this morning but it is a drop in the ocean but acorns and oak trees come to mind. However, here is my interpretation of events posted on my website.


http://www.norton-radstockweather.co.uk/NEW-Model-Analysis(2859336).htm


Martin G
Kilmersdon Radstock Bath Somerset



Look up my New Facebook Weather Page  for all the latest up to the minute weather stories as they happen
GIBBY
22 October 2014 09:00:22

All stubbornly familiar with this morning's 10 day Mean Chart from ECM. Low pressure to the NW and High to the South of the UK and broad and relatively mild SW'lies covering all.


http://www.wetterzentrale.de/pics/Reem2401.gif


Martin G
Kilmersdon Radstock Bath Somerset



Look up my New Facebook Weather Page  for all the latest up to the minute weather stories as they happen
Jonesy
22 October 2014 09:07:56


A few chinks of interest for 'cold fans' this morning but it is a drop in the ocean but acorns and oak trees come to mind. However, here is my interpretation of events posted on my website.


http://www.norton-radstockweather.co.uk/NEW-Model-Analysis(2859336).htm


Originally Posted by: GIBBY 


Thanks Gibby, something to keep an eye on atleast.


“November comes
And November goes,
With the last red berries
And the first white snows.

With night coming early,
And dawn coming late,
And ice in the bucket
And frost by the gate.

The fires burn
And the kettles sing,
And earth sinks to rest
Until next spring.”
― Clyde Watson


Medway Towns (Kent)
The Weather will do what it wants, when it wants, no matter what data is thrown at it !
Russwirral
22 October 2014 10:30:38

Youve just gotta wonder if there are a few sniffs in FI of something interesting happening.  Both ECM and GFS end on the doorstep of something quite attractive for cold weather.  CFS has been hinting at a very similar pattern for weeks now, though it keeps shifting this from november to February and back again.  But i think the overall consensus from CFS is there will be some sort of northern blocking at some point...


 


Though if i remember - i do this every year.  October brings the first Blues in FI to the UK, and I get ll over excited. 


Polar Low
22 October 2014 10:44:06

Live on



 




A few chinks of interest for 'cold fans' this morning but it is a drop in the ocean but acorns and oak trees come to mind. However, here is my interpretation of events posted on my website.


http://www.norton-radstockweather.co.uk/NEW-Model-Analysis(2859336).htm


Originally Posted by: Jonesy 


Thanks Gibby, something to keep an eye on atleast.


“November comes
And November goes,
With the last red berries
And the first white snows.

With night coming early,
And dawn coming late,
And ice in the bucket
And frost by the gate.

The fires burn
And the kettles sing,
And earth sinks to rest
Until next spring.”
― Clyde Watson


Originally Posted by: GIBBY 

Stormchaser
22 October 2014 11:54:19

No chart available for the selected hour. Many charts start at 3 hours ahead, so if you have 0 hours selected try stepping forward or selecting a later hour.  No chart available for the selected hour. Many charts start at 3 hours ahead, so if you have 0 hours selected try stepping forward or selecting a later hour.


The ridge across Europe is looking increasingly strong and influential for the middle of next week. GFS still has low pressure development breaking it down without much delay, but ECM has produced a much slower breakdown this morning.


In fact, the plume of warm air remains in place across the UK for the remainder of the run, for example:


No chart available for the selected hour. Many charts start at 3 hours ahead, so if you have 0 hours selected try stepping forward or selecting a later hour.


This could well translate to mist, fog and/or low cloud at the surface, with very mild nights and days and that now rather familiar clammy feel to the air.


With a bit of luck, warm with plenty of sunshine is not out of the question though.


Trouble is, nothing of the sort comes from the GFS version of events - and the 06z GFS op run just breaks things down even faster.


This isn't true of UKMO though, which looks capable of maintaining the plume at least as much as ECM does:


http://www.meteociel.fr/modeles/ecmwf/archives/2014102200/ECM1-144.GIF


 


Meanwhile GEM is essentially a slightly slower version of the GFS 00z... so it's a classic west of the Atlantic/east of the Atlantic standoff at the moment!


 


Longer term, more in the way of higher heights in the Arctic from GFS, and ECM has performed a dramatic turnaround from what was a string of runs with much lower Arctic heights:


No chart available for the selected hour. Many charts start at 3 hours ahead, so if you have 0 hours selected try stepping forward or selecting a later hour.


Not bad at all for the start of November 


The main point there is the lack of organisation to the polar vortex, which during winters like the last one is an intense area of persistent low heights covering a large part of the high latitudes and bringing an often long lasting run of storms to those under its influence.


If you have any problems or queries relating to TWO you can Email [email protected]

https://twitter.com/peacockreports 
2023's Homeland Extremes:
T-Max: 30.2°C 9th Sep (...!) | T-Min: -7.1°C 22nd & 23rd Jan | Wettest Day: 25.9mm 2nd Nov | Ice Days: 1 (2nd Dec -1.3°C in freezing fog)
Keep Calm and Forecast On
Stormchaser
22 October 2014 19:55:54

ECM charts not updated on the TWO viewer...


In summary, the model now shows the LP development Tue-Wed next week that GFS has been going for, which clears the warm, muggy air mass away while bringing a fair amount of rain for most of us. It's then much cooler for the final few days of the month with a risk of frost overnight as a ridge of high pressure drifts through the UK.


GFS persists with that idea, and at about the same pace of the 00z, after that faster 06z run. It then brings in the next Atlantic low more quickly than ECM does, meaning we're back in a mild air stream again after about a day of the fresh conditions.


UKMO still doesn't go for that LP development, so the transition to a cooler, fresher regime is a slower affair.


GEM develops the LP but doesn't take it NE so readily as GFS and ECM, instead having it slide south towards Spain for a day or so, after which it dissipates - the mild regime holds on to the end of the 30th, similar to today's ECM 00z run.


 


So... not much clarity on how quickly things progress next week, but the general theme of one Atlantic trough moving away to the NE and being replaced by another one out to our west - perhaps tracking more E than NE - is consistent across the models.


Up in the Arctic, there's not much in the way of developments to report, with the PV still looking to remain disorganised over the next 10 days and probably longer based on current output.


If you have any problems or queries relating to TWO you can Email [email protected]

https://twitter.com/peacockreports 
2023's Homeland Extremes:
T-Max: 30.2°C 9th Sep (...!) | T-Min: -7.1°C 22nd & 23rd Jan | Wettest Day: 25.9mm 2nd Nov | Ice Days: 1 (2nd Dec -1.3°C in freezing fog)
Keep Calm and Forecast On
Brian Gaze
22 October 2014 21:47:11


ECM charts not updated on the TWO viewer...


In summary, the model now shows the LP development Tue-Wed next week that GFS has been going for, which clears the warm, muggy air mass away while bringing a fair amount of rain for most of us. It's then much cooler for the final few days of the month with a risk of frost overnight as a ridge of high pressure drifts through the UK.


GFS persists with that idea, and at about the same pace of the 00z, after that faster 06z run. It then brings in the next Atlantic low more quickly than ECM does, meaning we're back in a mild air stream again after about a day of the fresh conditions.


UKMO still doesn't go for that LP development, so the transition to a cooler, fresher regime is a slower affair.


GEM develops the LP but doesn't take it NE so readily as GFS and ECM, instead having it slide south towards Spain for a day or so, after which it dissipates - the mild regime holds on to the end of the 30th, similar to today's ECM 00z run.


 


So... not much clarity on how quickly things progress next week, but the general theme of one Atlantic trough moving away to the NE and being replaced by another one out to our west - perhaps tracking more E than NE - is consistent across the models.


Up in the Arctic, there's not much in the way of developments to report, with the PV still looking to remain disorganised over the next 10 days and probably longer based on current output.


Originally Posted by: Stormchaser 


They're available on the new server now (same urls) and should be a tad smoother to view. I've also made some changes to the GFS charts and GEFS charts and will make more in the next few days.


 


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

Remove ads from site

Ads