nickl
24 November 2014 22:01:49
Wouldn't extrapolate too much from the MJO in low amplitude phase 7. need it away from that 'circle of doom' to get much influence in my experience.
KevBrads1
25 November 2014 06:45:38
Although a negative NAO and AO increases the chances of cold outbreaks for the UK, it isn't a definite. Just look at March 1957, the warmest March on record for the CET despite both these values being in the negative and by margin as well.

February 1991, the coldest Feb since 1986, had a fairly positive NAO


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roger63
25 November 2014 08:54:00

Originally Posted by: KevBrads1 

Although a negative NAO and AO increases the chances of cold outbreaks for the UK, it isn't a definite. Just look at March 1957, the warmest March on record for the CET despite both these values being in the negative and by margin as well.

February 1991, the coldest Feb since 1986, had a fairly positive NAO


Correlation between the actual DJF  NAO and CET is 0.66.but forecasting the acual NAO is difficult so if you looked at forecast NAO and CET correlation would be lower.It would be good if METO would release figures showing their  forecast winter NAO and the actual.

Brian Gaze
25 November 2014 18:18:41

The MetO CPF forecast is available for December. January and February. Looks like it's been available for several days but I've just seen it now:


http://www.metoffice.gov.uk/publicsector/contingency-planners


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Solar Cycles
25 November 2014 19:19:41

Originally Posted by: Brian Gaze 


The MetO CPF forecast is available for December. January and February. Looks like it's been available for several days but I've just seen it now:


http://www.metoffice.gov.uk/publicsector/contingency-planners


Drum roll please.......... Another pee poor attempt whist sitting on that rickety fence, why don't they  put their resources to good use and come up with forecast instead of a game of probabilities and chance.

Richard K
25 November 2014 19:24:50
Looks like the strat has warmed a bit, this chart illustrates how different it is to last year.
http://www.cpc.ncep.noaa.gov/products/stratosphere/temperature/30mb9065.gif 
Saffron Walden, NW Essex, approx 70m above sea level (when the tide is out)
Matty H
25 November 2014 19:25:37

Originally Posted by: Solar Cycles 


Drum roll please.......... Another pee poor attempt whist sitting on that rickety fence, why don't they  put their resources to good use and come up with forecast instead of a game of probabilities and chance.



Maybe because there is no proven forecasting method for that range? I guess they could speculate about certain things such as model runs having bias, but that would be daft 


A forecast based on probability rather than some speculative LRF method will be more accurate more often, even if it is a cop out. 


Solar Cycles
25 November 2014 19:31:34

Originally Posted by: Matty H 


 


Maybe because there is no proven forecasting method for that range? I guess they could speculate about certain things such as model runs having bias, but that would be daft 


A forecast based on probability rather than some speculative LRF method will be more accurate more often, even if it is a cop out. 


It hasn't been for the last 4 years.

JACKO4EVER
25 November 2014 20:05:25

Originally Posted by: Brian Gaze 


The MetO CPF forecast is available for December. January and February. Looks like it's been available for several days but I've just seen it now:


http://www.metoffice.gov.uk/publicsector/contingency-planners



I think that's a very fair assessment of the current situation by MetO in my opinion. Thanks for posting. Perhaps the odd colder outbreak later on but overall a warmer than average outcome is favoured- I can live with that!


:-)

Solar Cycles
25 November 2014 20:16:55

Originally Posted by: JACKO4EVER 


 


I think that's a very fair assessment of the current situation by MetO in my opinion. Thanks for posting. Perhaps the odd colder outbreak later on but overall a warmer than average outcome is favoured- I can live with that!


:-)


Lol, that's because your a mild ramper, but even if it was showing the probabilities for a colder than average winter I'd still be unhappy at the presentation and lack of detail.

Sasa
  • Sasa
  • Advanced Member
25 November 2014 20:34:55
I am happy with this forecast Jacko4ever because I just assume the opposite of what they say and in % of the cases I am right so roll on cold winter. In any case in the mountains of Kingston Upon Thames we already 2 hard frosts which is more then we had during the last winter Dec - Mar.
Kingston Upon Thames
JACKO4EVER
25 November 2014 20:39:57

Originally Posted by: Solar Cycles 


Lol, that's because your a mild ramper, but even if it was showing the probabilities for a colder than average winter I'd still be unhappy at the presentation and lack of detail.



LOL I don't see how they can add much more detail- do you want them to say what the forecast is for Mrs Pricklepants' sisters birthday party on February 5th tea time in Slough? The point is that's all they can do is talk about probabilities- and even then it's still all up in the air. Be it mild or cold, they are on a hiding to nothing as usual. 


;-)

Sasa
  • Sasa
  • Advanced Member
25 November 2014 20:44:01
In any case it is still possible to have a mild winter on average with a few good snowy blasts in between that would have the press talking about it for years.
Kingston Upon Thames
Solar Cycles
25 November 2014 21:44:28

Originally Posted by: JACKO4EVER 


 


LOL I don't see how they can add much more detail- do you want them to say what the forecast is for Mrs Pricklepants' sisters birthday party on February 5th tea time in Slough? The point is that's all they can do is talk about probabilities- and even then it's still all up in the air. Be it mild or cold, they are on a hiding to nothing as usual. 


;-)


😃 No I want a forecast not who may win the 2.30 at Haydock based on probabilities. 

Essan
25 November 2014 21:44:43

Originally Posted by: Sasa 

In any case it is still possible to have a mild winter on average with a few good snowy blasts in between that would have the press talking about it for years.



Exactly


Andy
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festivalking
26 November 2014 12:05:51

Think I'm getting old, I'm already tired from "hunt the cold" game and its not even December yet! Still ,the watch words are potential or loaded. Ah bless......if I had a pound etc etc

Couple days off away from the models might be a short term cure.

Perspective though some member of the forum suggest that its going to be mild no sign of cold in the next 2 weeks. Its progged for a top temp of 5 or 6 here next week with a keen E wind......that's certainly not mild. Its the little things that get your goat.

I'll get my coat and pop back in at the weekend.


Dousland, Dartmoor 206 m/asl
Its only going to snow when Gibby says so.
Jonesy
26 November 2014 12:25:59

Originally Posted by: festivalking 

Think I'm getting old, I'm already tired from "hunt the cold" game and its not even December yet! Still ,the watch words are potential or loaded. Ah bless......if I had a pound etc etc

Couple days off away from the models might be a short term cure.

Perspective though some member of the forum suggest that its going to be mild no sign of cold in the next 2 weeks. Its progged for a top temp of 5 or 6 here next week with a keen E wind...... Its the little things that get your goat.

I'll get my coat and pop back in at the weekend.


Chin up it's not even Winter yet  Mid-Month could well give us a shot at some cold and dare I say a wintry mix.


 


 


Medway Towns (Kent)
The Weather will do what it wants, when it wants, no matter what data is thrown at it !
Osprey
26 November 2014 23:59:10

Originally Posted by: Jonesy 


 


Chin up it's not even Winter yet  Mid-Month could well give us a shot at some cold and dare I say a wintry mix.



Yeap!


Still have a gut feelng for very cold even some snow around the middle of next month.


It has to be or otherwise we won't get our usual wet dull Christmas day


Nobody likes a smartass, especially another smartass...
If it ain't broke, don't fix it!
festivalking
27 November 2014 10:56:17
The other channel going for a coldish winter...........http://www.netweather.tv/index.cgi?action=winter-forecast-2014;sess=
Dousland, Dartmoor 206 m/asl
Its only going to snow when Gibby says so.
Jonesy
27 November 2014 11:02:24

Originally Posted by: festivalking 

The other channel going for a coldish winter...........http://www.netweather.tv/index.cgi?action=winter-forecast-2014;sess=


Was just reading that myself, a wetter South is a worry unless it's Snow 


Also the significant wind event in December I presume will be on Christmas Day when far too many sprouts will be consumed across the U.K. 


Key Pointers from the Neighbours Winter Forecast


Overall the key conclusions are that winter will have the following characteristics:


  • Slightly colder than average.

  • Around average rainfall but conditions favour wetter further south and drier to the north of the UK.

  • December likely to be the most unsettled month with the risk of a significant wind event (though less so compared to last year).

  • February the most settled and driest month.

  • Late December and into January is most likely to herald a significant wintry spell, though other major cold snaps throughout the winter are likely as well.

  • Most of the UK likely to see some settling snow at some point.


 


 


These conditions are likely to be caused by:


  • A mean negative Arctic Oscillation (AO) throughout winter of around -1

  • Positive height anomalies to the north leading to significant high latitude blocking.

  • A weakened stratospheric vortex with a Sudden Stratospheric Warming (SSW) likely around the turn of the year leading to a very disturbed tropospheric polar vortex and negative NAO around this time.

  • A southerly displaced jet stream


 


http://www.netweather.tv/index.cgi?action=winter-forecast-2014;sess=


 


Chop chop Brian..we are waiting for TWOs 


Medway Towns (Kent)
The Weather will do what it wants, when it wants, no matter what data is thrown at it !
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