Remove ads from site

Chiltern Blizzard
02 January 2014 22:52:01


Well the GFS pub run is in serious of being rather interesting . . . .


Originally Posted by: Quantum 


This really has taken the wind out of my sails. We have WAA coming into canada, a monster siberian high and rather dramatic cyclosis in the atlantic. I'm betting an outlier. 

Originally Posted by: nsrobins 



I'm not saying the 18z will verify, and I would be surprised if it isn't an outlier, but as per our earlier exchange, the fact things can change in the model by the 10+ day point so significantly within just one run was why I responded as I did. We'll see...

Andrew
Rendlesham, Suffolk 20m asl
Phil G
02 January 2014 22:52:42
Interesting chart if that low moved SE we'd be in business with that cold pool not so far away.
http://www.wetterzentrale.de/pics/Rtavn3841.png 

18z GFS quite a different run in all.

Whether Idle
02 January 2014 22:53:27





Well the GFS pub run is in serious of being rather interesting . . . .


Originally Posted by: Quantum 


This really has taken the wind out of my sails. We have WAA coming into canada, a monster siberian high and rather dramatic cyclosis in the atlantic. I'm betting an outlier. 


Originally Posted by: Whether Idle 


Looks Zonal for the UK


Originally Posted by: Quantum 


Its transitioning between zonal and blocked. The overall NH pattern is very good. I can't quite believe this run though, given it is a polar opposite to every run preceeding it. Most likely scenario imo is that this run is drunk and tommorow morning it will be back to buisness as usual. 


Originally Posted by: nsrobins 


The current pattern is pretty stable... a kind of dynamic equilibrium.  We need a game changer. 


Dover, 5m asl. Half a mile from the south coast.
Whether Idle
02 January 2014 22:55:03

Interesting chart if that low moved SE we'd be in business with that cold pool not so far away.
http://www.wetterzentrale.de/pics/Rtavn3841.png

18z GFS quite a different run in all.

Originally Posted by: Phil G 


Thats the Met O 30 dayer coming to fruition in that deep FI chart, with colder conditions in the north perhaps setting in ...blah blah.  Time will tell....


Dover, 5m asl. Half a mile from the south coast.
Quantum
02 January 2014 22:56:09



Well the GFS pub run is in serious of being rather interesting . . . .


Originally Posted by: Chiltern Blizzard 


This really has taken the wind out of my sails. We have WAA coming into canada, a monster siberian high and rather dramatic cyclosis in the atlantic. I'm betting an outlier. 


Originally Posted by: Quantum 



I'm not saying the 18z will verify, and I would be surprised if it isn't an outlier, but as per our earlier exchange, the fact things can change in the model by the 10+ day point so significantly within just one run was why I responded as I did. We'll see...

Andrew

Originally Posted by: nsrobins 


I'm not doubting it can, ofc all forecasts at the 10+ day range are probablistic. I wouldn't rule it out, I would just call it especially unlikely given the outputs recently. 


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Quantum
02 January 2014 22:59:14






Well the GFS pub run is in serious of being rather interesting . . . .


Originally Posted by: Whether Idle 


This really has taken the wind out of my sails. We have WAA coming into canada, a monster siberian high and rather dramatic cyclosis in the atlantic. I'm betting an outlier. 


Originally Posted by: Quantum 


Looks Zonal for the UK


Originally Posted by: Whether Idle 


Its transitioning between zonal and blocked. The overall NH pattern is very good. I can't quite believe this run though, given it is a polar opposite to every run preceeding it. Most likely scenario imo is that this run is drunk and tommorow morning it will be back to buisness as usual. 


Originally Posted by: Quantum 


The current pattern is pretty stable... a kind of dynamic equilibrium.  We need a game changer. 


Originally Posted by: nsrobins 


Yes, and apart from this one run everything seems to suggest a continuation of unsettled and fairly mild conditions with us possibly ending with blocking close to or south to the UK. With a -ve AO northern blocking is always going to be a possibility, but I can't quite believe the sudden explosive expansion of the high into siberia to occupy half of Eurasia, while simbultaniously we see signs of massive cyclosis in the atlantic. 


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Chiltern Blizzard
02 January 2014 23:03:17





Well the GFS pub run is in serious of being rather interesting . . . .


Originally Posted by: Whether Idle 


This really has taken the wind out of my sails. We have WAA coming into canada, a monster siberian high and rather dramatic cyclosis in the atlantic. I'm betting an outlier. 


Originally Posted by: Quantum 


Looks Zonal for the UK


Originally Posted by: Whether Idle 


Its transitioning between zonal and blocked. The overall NH pattern is very good. I can't quite believe this run though, given it is a polar opposite to every run preceeding it. Most likely scenario imo is that this run is drunk and tommorow morning it will be back to buisness as usual. 


Originally Posted by: Quantum 


The current pattern is pretty stable... a kind of dynamic equilibrium.  We need a game changer. 

Originally Posted by: nsrobins 



Whereas the run is indeed broadly zonal for the UK, the pattern around us is rather different... Whereas earlier runs were stable zonal set-up, this is more tenuous zonal where a tweak here or there could give some seriously wintry weather. Although we're on the mild side at the end, the cold to our NE is both severe and nearby, quite different to recent charts...

It is quite likely to be an outlier, and even if it verified, we'd still not quite be in serious cold... But then again,can anyone remember the mid-Feb 09 mild outlier?... A reversal of fortunes perhaps?

Andrew
Rendlesham, Suffolk 20m asl
Quantum
02 January 2014 23:04:48






Well the GFS pub run is in serious of being rather interesting . . . .


Originally Posted by: Chiltern Blizzard 


This really has taken the wind out of my sails. We have WAA coming into canada, a monster siberian high and rather dramatic cyclosis in the atlantic. I'm betting an outlier. 


Originally Posted by: Whether Idle 


Looks Zonal for the UK


Originally Posted by: Quantum 


Its transitioning between zonal and blocked. The overall NH pattern is very good. I can't quite believe this run though, given it is a polar opposite to every run preceeding it. Most likely scenario imo is that this run is drunk and tommorow morning it will be back to buisness as usual. 


Originally Posted by: Whether Idle 


The current pattern is pretty stable... a kind of dynamic equilibrium.  We need a game changer. 


Originally Posted by: Quantum 



Whereas the run is indeed broadly zonal for the UK, the pattern around us is rather different... Whereas earlier runs were stable zonal set-up, this is more tenuous zonal where a tweak here or there could give some seriously wintry weather. Although we're on the mild side at the end, the cold to our NE is both severe and nearby, quite different to recent charts...

It is quite likely to be an outlier, and even if it verified, we'd still not quite be in serious cold... But then again,can anyone remember the mid-Feb 09 mild outlier?... A reversal of fortunes perhaps?

Andrew

Originally Posted by: nsrobins 


Has it ever gone the other way? 


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Stormchaser
02 January 2014 23:28:01

18z offers an interesting new scenrio, which sees the powerful storm early next week shifting into Scandinavia a bit quicker than on previous runs. It combines with another trough further east, and then a ridge in the Atlantic is able to exploit the WAA from the powerful U.S. storm to build north and attempt to link with a ridge from the Arctic/Siberian High. It very nearly gets there, and the sudden switch to energy going NE at 192 hours is rather suspcious IMO.


I remember when we used to frequently see energy being corrected to go SE rather than NE. That was when we last had notable blocking in the Arctic, so I'm keeping my mind open at the moment 


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
Karl Guille
02 January 2014 23:56:50
I smell something! 😉
St. Sampson
Guernsey
nsrobins
03 January 2014 00:02:37

 


I smell something! 😉

Originally Posted by: Karl Guille 


There's a lot of cows on Guernsey - I'd check your shoes


Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
Karl Guille
03 January 2014 00:06:28

 


I smell something! 😉

Originally Posted by: nsrobins 


There's a lot of cows on Guernsey - I'd check your shoes

Originally Posted by: Karl Guille 



You could be right. Whatever it is, my interest in this as yet disappointing winter has suddenly been aroused! For the first time in many months I look forward to viewing the 00z runs in the morning! Early days, but who knows!! 🙂

St. Sampson
Guernsey
NickR
03 January 2014 00:11:28
Bit of a dampner from the meto, who, acc to Ian F on the other side, have:

"Positive temp anomalies by end Jan/early Feb; SW flow."
Nick
Durham
[email protected]
Snowedin3
03 January 2014 00:24:48
To be fair it's impossible to know what
Will happen in two weeks time, the only thing you can do is read what information you have at the time by which time it can change so
Quickly I know I'm stating the obvious but it's easy to get caught up in thinking these charts in the
long range will come off! We all know that by now, however despite what Ian f has said, GFS
18z ensembles paint an interesting picture.
Dean Barnes
Finstock, Chipping Norton, Oxfordshire
160m ASL 525 Ft
Gooner
03 January 2014 00:51:49

Bit of a dampner from the meto, who, acc to Ian F on the other side, have:

"Positive temp anomalies by end Jan/early Feb; SW flow."

Originally Posted by: NickR 


Oh dear


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


vince
03 January 2014 01:06:10


Bit of a dampner from the meto, who, acc to Ian F on the other side, have:

"Positive temp anomalies by end Jan/early Feb; SW flow."

Originally Posted by: Gooner 


Oh dear


Originally Posted by: NickR 


 


LOL Love it , all the guff and gas about this being the Winter of all Winters and yet we could well beat 1988/89 for one of the mildest Winters on record , at least that Winter i saw snow on the ground , so far this Spring zilch , zero , feck all .  Karma has certainly come back to haunt all those that were dissing me last Spring/Summer when i wanted warmth..

Quantum
03 January 2014 01:24:44



Bit of a dampner from the meto, who, acc to Ian F on the other side, have:

"Positive temp anomalies by end Jan/early Feb; SW flow."

Originally Posted by: vince 


Oh dear


Originally Posted by: Gooner 


 


LOL Love it , all the guff and gas about this being the Winter of all Winters and yet we could well beat 1988/89 for one of the mildest Winters on record , at least that Winter i saw snow on the ground , so far this Spring zilch , zero , feck all .  Karma has certainly come back to haunt all those that were dissing me last Spring/Summer when i wanted warmth..


Originally Posted by: NickR 



Lol, so true. The lead up to this winter was particularly sensational in the media. 


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Karl Guille
03 January 2014 06:14:48
Well,the possibility of a pattern change mid-month remains this morning with GEFS 00z producing one of the better runs of the current winter with mean 850hPA temps getting below -5 for the northern half of the UK. With the possibility of high pressure establishing to our north there will at least be a brief respite in the current wet and windy weather and, beyond that, an easterly of sorts could make an appearance. Very early days but the charts are certainly a welcome distraction at this time.
St. Sampson
Guernsey
Retron
03 January 2014 06:30:32

Well,the possibility of a pattern change mid-month remains this morning

Originally Posted by: Karl Guille 


Indeed, GEFS has shown a switch to colder (relative to present) conditions consistently over the past 3 runs now, yesterday's 6z being the last run which just showed the status quo continuing.


The ECM ensembles from yesterday continue to show a similar cooling midmonth, coupled with somewhat less in the way of wind and rain (but less settled than the previous few runs).


I'd still say a switch away from the current deeply disturbed weather is reasonably likely by midmonth but it remains to be seen whether it's a switch to a colder pattern or just an easing up on the mild zonal mush we currently have.


Leysdown, north Kent
Whether Idle
03 January 2014 07:19:05


Well,the possibility of a pattern change mid-month remains this morning

Originally Posted by: Retron 


Indeed, GEFS has shown a switch to colder (relative to present) conditions consistently over the past 3 runs now, yesterday's 6z being the last run which just showed the status quo continuing.


The ECM ensembles from yesterday continue to show a similar cooling midmonth, coupled with somewhat less in the way of wind and rain (but less settled than the previous few runs).


I'd still say a switch away from the current deeply disturbed weather is reasonably likely by midmonth but it remains to be seen whether it's a switch to a colder pattern or just an easing up on the mild zonal mush we currently have.


Originally Posted by: Karl Guille 


Yes Darren.  The 9th is no longer a key date.  FWIW (not a lot) IMHO the GFS shows on the 0z a slow transition to blocked cold and for once the transition looks feasible.


The ECM ensembles would suggest to be picking up on the same thing - which is a "kettley" High type scenario where for the north of Britain theres a better chance (approaching 17-20th January)of getting polar air wheras if the high is too far north then southerners may have to contend with too much of warmer stuff being dragged up from the south.


Encouraging signs this morning, though it all comes with a massive health warning as we all know the models/ ensembles will  flip and the further out in FI things are then only a fool can place much confidence in them.


Dover, 5m asl. Half a mile from the south coast.
Chiltern Blizzard
03 January 2014 07:41:02
Was expecting 0z op to move back to the atlantic dominated pattern that we've been stuck in the past few weeks from last night's 18z, but no, it builds on it with definite wintry potential by week 2! Trend?

Andrew
Rendlesham, Suffolk 20m asl
Sevendust
03 January 2014 08:01:25

Was expecting 0z op to move back to the atlantic dominated pattern that we've been stuck in the past few weeks from last night's 18z, but no, it builds on it with definite wintry potential by week 2! Trend?

Andrew

Originally Posted by: Chiltern Blizzard 


Not entirely sure I'm reading it like that


I don't see anything wintry(for the south) with any consistency and the blocking I do see is somewhat tenuous and not especially strong


Aside from occasional frosts(which we have been having on occasion already) the oulook is not great......yet


What I would like to see, and there have been occasional hints in the last few days, is the slackening of the jet promoting a build of pressure to the east. 

Rob K
03 January 2014 08:14:17



Bit of a dampner from the meto, who, acc to Ian F on the other side, have:

"Positive temp anomalies by end Jan/early Feb; SW flow."

Originally Posted by: Quantum 


Oh dear


Originally Posted by: vince 


 


LOL Love it , all the guff and gas about this being the Winter of all Winters and yet we could well beat 1988/89 for one of the mildest Winters on record , at least that Winter i saw snow on the ground , so far this Spring zilch , zero , feck all .  Karma has certainly come back to haunt all those that were dissing me last Spring/Summer when i wanted warmth..


Originally Posted by: Gooner 



Lol, so true. The lead up to this winter was particularly sensational in the media. 

Originally Posted by: NickR 



Really? With the obvious exception of the Express (which runs the same tripe every year) I haven't seen any media forecasts of a particularly severe winter.

Just about every serious forecasting agency in Europe went for a mild or average winter.
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
roger63
03 January 2014 08:17:02


Was expecting 0z op to move back to the atlantic dominated pattern that we've been stuck in the past few weeks from last night's 18z, but no, it builds on it with definite wintry potential by week 2! Trend?

Andrew

Originally Posted by: Sevendust 


Not entirely sure I'm reading it like that


I don't see anything wintry(for the south) with any consistency and the blocking I do see is somewhat tenuous and not especially strong


Aside from occasional frosts(which we have been having on occasion already) the oulook is not great......yet


What I would like to see, and there have been occasional hints in the last few days, is the slackening of the jet promoting a build of pressure to the east. 


Originally Posted by: Chiltern Blizzard 


The GEFS 0h ensembles show little supoort for sustained cold.The split zonal circulation;anticyclonic circulation is 70:30 at both 240h and 360h with pnly two or thrre menbers having HP to the north east. Both the 18h and 0h GFs run   show HP build to the north east and both seem outliers rather than a trend.! 

Retron
03 January 2014 08:31:40
0z ECM ensembles - they still show a change away from this very disturbed weather in around a week's time:

http://oi39.tinypic.com/e7knrc.jpg 
Leysdown, north Kent
Users browsing this topic

Remove ads from site

Ads