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Andy Woodcock
06 January 2014 21:01:21

I would not call any cold spell until GFS/UKMO is on board as  I have lost count of the number of 'ghost' easterlies/northerlies from ECM over the last 13 months.


ECM used to be my favourite model during cold spell developing situations but its now a poor third behind GFS and UKMO at the top.


Sometimes I think Joe Basta*di is programming the ECM computer


ECM is like the rest of Europe......failing.


Andy


Andy Woodcock
Penrith
Cumbria

Altitude 535 feet

"Why are the British so worried about climate change? Any change to their climate can only be an improvement" John Daley 2001
nickl
06 January 2014 21:03:16

its quite normal for the ecm ens to take the theme of the op run. the 12z op was an undercutting run with most split flow jet going south. the ens mean and anomolys reflect that. if the 00z run is more of an over the top run, then expect the ens mean etc to reflect that. however, it does seem that we will get split flow so all bets remain off.


ian F commented earlier that ecm ens were not giving good guidance so i suspect many different clusters present which sort of reflects the gem ens and gefs also (if you take account of its general bias  against undercutting).


finally, wrt the meto 30 dayer possible cold patterns, again ian F on nw mentioned that it has nothing to do with the nwp that we see and is to do with another source of guidance. that pretty well convinces me that it must be strat led. 


in conclusion, a curates egg of output. take a pin and you have as good a chance as anyone of getting it right. (as long as you arent sticking it a low res gfs op run!!)


andy - how does ukmo perform with a developing situation when it only shows to day 6? do things really develop significantly below T144 ? and gfs ? really? take the bias to over amplification out of the ecm ops and you have a pretty good idea where the output will go. ops to T144 and ens thereafter.   gfs? really ?


in any case, the statistics show that ecm performs best followed by ukmo and then the others. you dont need a subjective assessment. there is a proven statistical measurement that confirms it. if gfs were so good, why are noaa hugely overhauling it in april and why do they nearly always prefer the ecm guidance ahead of it?

moomin75
06 January 2014 21:05:32


I would not call any cold spell until GFS/UKMO is on board as  I have lost count of the number of 'ghost' easterlies/northerlies from ECM over the last 13 months.


ECM used to be my favourite model during cold spell developing situations but its now a poor third behind GFS and UKMO at the top.


Sometimes I think Joe Basta*di is programming the ECM computer


ECM is like the rest of Europe......failing.


Andy


Originally Posted by: Andy Woodcock 

Couldn't agree more Andy.


ECM has become the new NOGAPS in my view at times, and time and time again has shown winter armageddon type runs, while GFS and to a certain extent UKMO keep their feet on the ground.


I will not buy anything until there is CROSS MODEL agreement, and even then it would need to be within about 96 hours for me to buy into it.


ECM is not what its cracked up to be, and I consider it to be nonsense that it's the best model.


They all have their place, but generally speaking, a sensible view would be always to take each run, and imagine a kind of "blend" between the models and then you will not be far away from the truth.


Witney, Oxfordshire
100m ASL
Gooner
06 January 2014 21:12:51

ECM mean looks very good tonight a massive step forward.

http://www.wetterzentrale.de/pics/Reem1921.html

Originally Posted by: Ally Pally Snowman 

">http://www.wetterzentrale.de/pics/Reem2161.html


Agree APS , a couple of decent charrts there


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


Andy Woodcock
06 January 2014 21:14:42


its quite normal for the ecm ens to take the theme of the op run. the 12z op was an undercutting run with most split flow jet going south. the ens mean and anomolys reflect that. if the 00z run is more of an over the top run, then expect the ens mean etc to reflect that. however, it does seem that we will get split flow so all bets remain off.


ian F commented earlier that ecm ens were not giving good guidance so i suspect many different clusters present which sort of reflects the gem ens and gefs also (if you take account of its general bias  against undercutting).


finally, wrt the meto 30 dayer possible cold patterns, again ian F on nw mentioned that it has nothing to do with the nwp that we see and is to do with another source of guidance. that pretty well convinces me that it must be strat led. 


in conclusion, a curates egg of output. take a pin and you have as good a chance as anyone of getting it right. (as long as you arent sticking it a low res gfs op run!!)


andy - how does ukmo perform with a developing situation when it only shows to day 6? do things really develop significantly below T144 ? and gfs ? really? take the bias to over amplification out of the ecm ops and you have a pretty good idea where the output will go. ops to T144 and ens thereafter.   gfs? really ?


in any case, the statistics show that ecm performs best followed by ukmo and then the others. you dont need a subjective assessment. there is a proven statistical measurement that confirms it. if gfs were so good, why are noaa hugely overhauling it in april and why do they nearly always prefer the ecm guidance ahead of it?


Originally Posted by: nickl 


You can often project what the MetO +168 would be looking at the +144.


Remember the great Northerly forecasted by ECM at +144 in mid December, it was a million miles out and it was the GFS solution that verified. This has occured repeatedly during the last 13 months.


Remember 'That ECM Run' in early December 2012


Once bitten!


Andy


Andy Woodcock
Penrith
Cumbria

Altitude 535 feet

"Why are the British so worried about climate change? Any change to their climate can only be an improvement" John Daley 2001
Whether Idle
06 January 2014 21:21:15


I would not call any cold spell until GFS/UKMO is on board as  I have lost count of the number of 'ghost' easterlies/northerlies from ECM over the last 13 months.


ECM used to be my favourite model during cold spell developing situations but its now a poor third behind GFS and UKMO at the top.


Sometimes I think Joe Basta*di is programming the ECM computer


ECM is like the rest of Europe......failing.


Andy


Originally Posted by: Andy Woodcock 


  IMHO ECM is over-rated.  I know that  on average over time it verifies best (but only by a small margin). IMHO  in close run situations ECM often ends up being wrong due to overestimating the strength and extent of blocks iun the 144-240 time period.  Will this scenario follow suit?  Time will tell.


 


Dover, 5m asl. Half a mile from the south coast.
tallyho_83
06 January 2014 21:21:20
Deep into FI - Not much sign of any settled weather! And 915mb haha...classic!

http://www.wetterzentrale.de/pics/Rtavn3723.png 

Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
---------------------------------------
Sean Moon
Magical Moon
www.magical-moon.com


Karl Guille
06 January 2014 21:23:07

ECM mean looks very good tonight a massive step forward.

http://www.wetterzentrale.de/pics/Reem1921.html

Originally Posted by: Gooner 

">http://www.wetterzentrale.de/pics/Reem2161.html

Originally Posted by: Ally Pally Snowman 


Agree APS , a couple of decent charrts there



Doh, hadn't spotted that those were mean charts. It comes as no surprise therefore that the 12z ECM Op was pretty much on the mean at T240 which is an improvement on the 00z which was one of the coldest of the bunch!!


St. Sampson
Guernsey
Essan
06 January 2014 21:28:48


It is all hypothetical but there is actually a large difference between the GFS and ECM at 216hrs.

Originally Posted by: doctormog 



The general synoptics are nearly the same with low pressure W of Scotland pushing against high pressure to the east.  Details differ, with ECM having a stronger high.  At that range, it's a quite good match, IMO.  Though I'm not sure ECM would actually produce snow anywhere below 1,000ft west of Denmark.


But since its all in FI range, it's a moot point. 


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
nickl
06 January 2014 21:58:19

andy, i cant really be bothered to go into the detail re the dec 2012 ecm run and last months failed northerly. (i can find hundreds more illustrations where ecm was right at gfs's expense). the main point here is that its not the models that are at fault so much as us who are looking at them.  as gandalf posts, dont read ops literally post day 5/6. thats where the ens are supposed to be used. down to those stats again. the ens verify better post day 6 than the ops. last time i checked, the ens went ahead around T110. it may be a little later now since ecm's upgrade in june.


interesting that gem and ecm ens have almost exactly the same lw pattern at day 10.


also, interesting that both bring the atlantic back through thereafter though i wonder how this would  play out with low euro anomolys persisting.


 


 

Stormchaser
06 January 2014 22:12:19

http://expert-images.weatheronline.co.uk/daten/proficharts/en/nae/2014/01/06/basis18/ukuk/prec/14010709_0618.gif


http://expert-images.weatheronline.co.uk/daten/proficharts/en/nae/2014/01/06/basis12/ukuk/prec/14010812_0612.gif


NAE paints a wetter picture than GFS, with something interesting tomorrow morning that just happens to be locallised across some of the areas that have seen the most rain recently, followed by Wednesday's feature being further NW than GFS has it - and looking very intense.


Is this NAE handling convection better than GFS for once...?


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

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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
06 January 2014 22:14:39


interesting that gem and ecm ens have almost exactly the same lw pattern at day 10.


also, interesting that both bring the atlantic back through thereafter though i wonder how this would  play out with low euro anomolys persisting.


  

Originally Posted by: nickl 


I'm inclined to anticipate something along the lines of the Atlantic energy digging into Europe a bit in the form of a complex trough, while blocking to the NE is close enough to turn things wintry in the N/NE at times while elsewhere it remains a rainfest...


I really hope the block ends up closer than that and delivers a decent cold spell nationwide, but the Atlantic is looking rather too energetic for that IMO.


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
Gooner
06 January 2014 22:35:47

http://modeles.meteociel.fr/modeles/gfs/runs/2014010618/gfsnh-0-240.png?18


could be of interest further down the line


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


doctormog
06 January 2014 22:36:29
At a glance it looks like the 18z GFS has moved somewhat towards the ECM 12z scenario in the medium to longer term. It will be interesting to see what the overall picture will be in the 00z output

http://www.wetterzentrale.de/pics/Rtavn2401.png 
glenogle
06 January 2014 22:50:12

If in doubt, go for the classic, a fortnight after america gets it we will get it.


Therefore keep an eye on the charts for around the 18th to 21st for wintry weather 


UserPostedImage LLTNP 105m asl 
western100
06 January 2014 22:52:35
First post this winter, after an awful first 6 weeks of winter. A glimmer of potential tonight. Still too tentative to me and I still think anything cold will be shorter lived than in recent winters. Quite a few went for a more Atlantic based winter and I still see that happening on a regular basis to disrupt and prolonged colder set up.

Mid january still looks good to offer a change. Still only recorded 3 frosts since last April.
Worcestershire / Warwickshire Border
100m ASL
Twitter…..@Weather4u2
squish
06 January 2014 22:52:46
Some interesting output this evening.

Of more concern to me right now however is the developing trough to the SW for Wednesday. After that its all very uncertain, and even if the promising (from a cold weather point of view) 'undercutting' scenario takes hold, the main result will be copious amounts of rain for the south and south west in particular, and no guarantee that there wont be some gales thrown in (although from the S/SE rather than SW.....)
D.E.W on Dartmoor. 300m asl
Rob K
06 January 2014 22:52:48

If in doubt, go for the classic, a fortnight after america gets it we will get it.


Therefore keep an eye on the charts for around the 18th to 21st for wintry weather 

Originally Posted by: glenogle 



Didn't the wintry weather in America start in November though?!
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
Gooner
06 January 2014 22:55:21

Some interesting output this evening.

Of more concern to me right now however is the developing trough to the SW for Wednesday. After that its all very uncertain, and even if the promising (from a cold weather point of view) 'undercutting' scenario takes hold, the main result will be copious amounts of rain for the south and south west in particular, and no guarantee that there wont be some gales thrown in (although from the S/SE rather than SW.....)

Originally Posted by: squish 


That looks like shooting across Southern parts of Wales and England, could be some heavy rain .........................again


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


Jiries
06 January 2014 23:10:50


Blink and you'll miss it.


http://www.meteociel.fr/modeles/ecmwf/runs/2014010612/ECH1-144.GIF?06-0


 


Our shot at winter about to get blasted away


Originally Posted by: The Beast from the East 


Interesting to look at another LP coming to Toronto so possible to see winter storm for me?

NickR
06 January 2014 23:11:35



Blink and you'll miss it.


http://www.meteociel.fr/modeles/ecmwf/runs/2014010612/ECH1-144.GIF?06-0


 


Our shot at winter about to get blasted away


Originally Posted by: Jiries 


Interesting to look at another LP coming to Toronto so possible to see winter storm for me?


Originally Posted by: The Beast from the East 


How wonderful.


Nick
Durham
[email protected]
Jiries
06 January 2014 23:12:37


If in doubt, go for the classic, a fortnight after america gets it we will get it.


Therefore keep an eye on the charts for around the 18th to 21st for wintry weather 


Originally Posted by: Rob K 



Didn't the wintry weather in America start in November though?!

Originally Posted by: glenogle 


Yes early November and didn't do anything for the UK but made it worse for us so only way out is to see milder weather over N American and we get the cold with source from the east.

Jiries
06 January 2014 23:17:32




Blink and you'll miss it.


http://www.meteociel.fr/modeles/ecmwf/runs/2014010612/ECH1-144.GIF?06-0


 


Our shot at winter about to get blasted away


Originally Posted by: NickR 


Interesting to look at another LP coming to Toronto so possible to see winter storm for me?


Originally Posted by: Jiries 


How wonderful.


Originally Posted by: The Beast from the East 


Yes very wonderful  as GFS only show up to 180.  Subject to change but looking good to see LP waiting on the wings. 

NickR
06 January 2014 23:20:05





Blink and you'll miss it.


http://www.meteociel.fr/modeles/ecmwf/runs/2014010612/ECH1-144.GIF?06-0


 


Our shot at winter about to get blasted away


Originally Posted by: Jiries 


Interesting to look at another LP coming to Toronto so possible to see winter storm for me?


Originally Posted by: NickR 


How wonderful.


Originally Posted by: Jiries 


Yes very wonderful  as GFS only show up to 180.  Subject to change but looking good to see LP waiting on the wings. 


Originally Posted by: The Beast from the East 


It might be seen as rubbing the noses of those of us who are in the UK in the fact that we will NOT be getting anything remotely like that. 


 



Nick
Durham
[email protected]
Jiries
06 January 2014 23:30:42

I know Nick so hopefully when I return back to see this change to real cold with some snow or if not going to happen to get a early Spring to give a break for many who suffered with this abnormal Autumn type weather non-stop since September.  It been so rare to see London ensembles going for -5C uppers this winter so far.

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