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Brian Gaze
22 March 2021 15:41:15

NCEP have switched across to GFSv16. Running here on TWO:


https://www.theweatheroutlook.com/twodata/gfs.aspx


 


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
JOHN NI
22 March 2021 17:07:24


NCEP have switched across to GFSv16. Running here on TWO:


https://www.theweatheroutlook.com/twodata/gfs.aspx


 

Originally Posted by: Brian Gaze 


And a cold looking Easter it would be if this version came off.....


John.
The orange County of Armagh.
DEW
  • DEW
  • Advanced Member
23 March 2021 07:41:11

Jetstream - the current loop N of the UK soon dissipating in favour of a W-ly flow later this week, lasting to Tue 30th but weaker than previously forecast. Another loop then breaks up the flow and the tendency  Thu 1st - Tue 6th is then for the jet to split into two, a N branch near Iceland (though with occasional bits briefly breaking off to visit the UK) and a S branch across N Africa.


GFS - current HP declines as in previous forecasts with Atlantic trough carried in on W-lies Fri 26th - but W-ly spell now appears more short-lived as HP from S and SW build to place centre over UK as a whole 1035mb Thu 1st, It retrogresses to a position S of Greenland allowing LP over Spain/France to affect mainly the S of UK by Sun 4th. Finally, GFS hasn't given up on a N-ly blast; today's version is back over the UK Wed 7th and reviving the LP over France for what looks like a rather cold and wet spell after Easter.


GEFS - brief dip in temp Fri 26th soon recovering to be mild to Sat 3rd. Variation between runs is already happening then, most noticeable in Scotland,  and becomes greater everywhere, with op and control both favouring a cold end by Thu 8th. Little prospect of rain in the S (brief blip on Fri 26th), rather more days with rain in NW England and in Scotland but not in great amounts


ECM - same as GFS to Fri 26th but then quite different - a further Atlantic trough on  Mon 29th which leaves LP generally over the UK with a small depression localised 985mb Hebrides Wed 31st and then another 1000 mb Cornwall Fri 1st, both combining to draw in air from far N- looks much colder than GFS.


War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl
backtobasics
23 March 2021 11:33:58


Jetstream - the current loop N of the UK soon dissipating in favour of a W-ly flow later this week, lasting to Tue 30th but weaker than previously forecast. Another loop then breaks up the flow and the tendency  Thu 1st - Tue 6th is then for the jet to split into two, a N branch near Iceland (though with occasional bits briefly breaking off to visit the UK) and a S branch across N Africa.


GFS - current HP declines as in previous forecasts with Atlantic trough carried in on W-lies Fri 26th - but W-ly spell now appears more short-lived as HP from S and SW build to place centre over UK as a whole 1035mb Thu 1st, It retrogresses to a position S of Greenland allowing LP over Spain/France to affect mainly the S of UK by Sun 4th. Finally, GFS hasn't given up on a N-ly blast; today's version is back over the UK Wed 7th and reviving the LP over France for what looks like a rather cold and wet spell after Easter.


GEFS - brief dip in temp Fri 26th soon recovering to be mild to Sat 3rd. Variation between runs is already happening then, most noticeable in Scotland,  and becomes greater everywhere, with op and control both favouring a cold end by Thu 8th. Little prospect of rain in the S (brief blip on Fri 26th), rather more days with rain in NW England and in Scotland but not in great amounts


ECM - same as GFS to Fri 26th but then quite different - a further Atlantic trough on  Mon 29th which leaves LP generally over the UK with a small depression localised 985mb Hebrides Wed 31st and then another 1000 mb Cornwall Fri 1st, both combining to draw in air from far N- looks much colder than GFS.


Originally Posted by: DEW 


Thanks Dew - seriously hoping the cold signal drops away, April can bring pretty much any type of weather but late season cold is worst of the lot for me.

Hippydave
23 March 2021 20:52:49

GFS, GEM and ECM ops all showing chilly or cold weather in 10 days time, with some support from their respective ens sets (GFS/ECM anyway).


Before then and IMBY looking fairly average for the time of year other than a brief chilly interlude this weekend and a warmer couple of days to finish the month. 


Not a particularly welcome pattern I guess if it does verify but could lead to some beefy wintry showers, so interesting from a weather POV. Still of course plenty of time to move back towards something a touch warmer - the last cold blip forecast got significantly watered down after all. 


Home: Tunbridge Wells
Work: Tonbridge
DEW
  • DEW
  • Advanced Member
24 March 2021 07:45:48

16-dayer shows above average temps and dry weather spreading up through W Europe towards the Baltic, while further east still cold and in places wet from the Caspian down into Turkey. Doesn't match the GFS synoptics at all well


GFS brief burst of Atlantic activity with trough for most of UK linked to LP 970mb Iceland Fri 26th and another more affecting Scotland linked to 955mb Iceland Mon 29th. That passes on into Scandinavia but the worst of its trailing N-lies deflected for a while by new HP 1035mb NI Thu 1st Apr - but the LP over Scandinavia regroups Denmark 1000 mb and brings in a spell of N/NE-lies Sat 3rd - Wed 7th while the HP retires to Greenland. At end of run Fri 9th pressure is slack over the UK but with residual cold air. 


GEFS temp dips briefly on Fri 29th then mild in S to Wed 31st after which (unlike previous forecasts) a long period of consistently cool weather agreed on by most runs - 3/5C below norm through to Fri 9th. Intermittent and small amounts of rain. Scotland misses out on the mild spell but does warm up a little towards Fri 9th; also more rain around Mon 29th there and NW England. Also, later on. some wet days for the E coast.


ECM agrees with GFS, if anything the N/NE-ly spell is  more directly from the Arctic controlled by trough of LP the whole length of Norway


War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl
marcus72
24 March 2021 08:30:05
The GEFS snow row total for London was down to 3 a week ago. I thought we were soon going to be seeing 0.....but now it's back up over 50! Unlikely that we'll see any snow in the south but it shows the cool trend mentioned by DEW 😔
Langstone, SE Hampshire
Brian Gaze
24 March 2021 08:34:46

The GEFS snow row total for London was down to 3 a week ago. I thought we were soon going to be seeing 0.....but now it's back up over 50! Unlikely that we'll see any snow in the south but it shows the cool trend mentioned by DEW 😔

Originally Posted by: marcus72 


TWO snow row is at 13/33 so less than 50%. Sites using slightly different grid points could be showing something different.



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
Ally Pally Snowman
24 March 2021 10:11:19

A significant cold plunge from the north looks more and more likely this morning as we head to the start of April.  Could be some beefy snow showers to be had.


https://www.wetterzentrale.de/en/topkarten.php?map=1&model=ecm&var=2&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref


 


Bishop's Stortford 85m ASL.
Hungry Tiger
24 March 2021 10:33:39


A significant cold plunge from the north looks more and more likely this morning as we head to the start of April.  Could be some beefy snow showers to be had.


https://www.wetterzentrale.de/en/topkarten.php?map=1&model=ecm&var=2&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref


 


Originally Posted by: Ally Pally Snowman 



 


Gavin S. FRmetS.
TWO Moderator.
Contact the TWO team - [email protected]
South Cambridgeshire. 93 metres or 302.25 feet ASL.


Gooner
24 March 2021 11:41:39


Miles out but HP soon settles us down again , I am ready for some upper teen temps now , this time last year we were gearing up for some warmth 


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


Tim A
24 March 2021 12:23:18
Anyone up for some wet snow/wintry showers on Friday night?
https://www.wetterzentrale.de/maps/GFSOPUK06_66_2.png 

Tim
NW Leeds
187m asl

 My PWS 
ARTzeman
24 March 2021 13:09:26

Hail showers and moderate breeze forecast for my area.






Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet
moomin75
24 March 2021 17:36:07
Not liking these charts at all as we head towards Easter. And you just know that unlike in the depths of winter, these won't back down and will deliver a horrible mix of sleet and hail showers with a bitter North easterly wind. God I hate our climate sometimes.
Witney, Oxfordshire
100m ASL
moomin75
24 March 2021 17:38:06


A significant cold plunge from the north looks more and more likely this morning as we head to the start of April.  Could be some beefy snow showers to be had.


https://www.wetterzentrale.de/en/topkarten.php?map=1&model=ecm&var=2&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref


 


Originally Posted by: Ally Pally Snowman 

Yeah, and isn't this just bloody typical. You know this one won't back down, given that we are (mostly) looking forward to the end of lockdown and a chance to get out and about in spring sunshine over Easter.


Just as we entered Lockdown 1 last year, the weather was glorious and warm, now the complete opposite. It sums up this country perfectly. We are dammed.


Witney, Oxfordshire
100m ASL
Surrey John
24 March 2021 18:15:03

Not liking these charts at all as we head towards Easter. And you just know that unlike in the depths of winter, these won't back down and will deliver a horrible mix of sleet and hail showers with a bitter North easterly wind. God I hate our climate sometimes.

Originally Posted by: moomin75 


 


Wasn’t it 2 Easters ago (might have been 3) 


start of Easter (Good Friday) it snowed (and settled) in Peak District


 


But last year during first lockdown it was rather warm


Bradford on Avon, Wiltshire
35m ASL
Bolty
24 March 2021 18:18:01


 


 


Wasn’t it 2 Easters ago (might have been 3) 


start of Easter (Good Friday) it snowed (and settled) in Peak District


 


But last year during first lockdown it was rather warm


Originally Posted by: Surrey John 


Easter 2018 was a cold one. I remember some higher routes getting snow on the Easter Monday (2 April).


Easter 2019 was a stunner. All four days were lovely and warm and sunny.


Easter 2020 started warm but turned colder as it progressed.


But yes it's looking increasingly likely this one could join the cold club. Some of those charts look very reminicient of early April 2008 which saw snow to some quite low and southerly locations.


Scott
Blackrod, Lancashire (4 miles south of Chorley) at 156m asl.
My weather station 
Saint Snow
24 March 2021 19:04:11

I remember one Easter school holidays taking my kids on a 'snow safari' in the Peak District. Disappointing depths and we got to near Buxton before finding enough to sledge on. Going on pics and the ages of the girls, I reckon 2011 or 2012.


 



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
doctormog
24 March 2021 19:09:35


I remember one Easter school holidays taking my kids on a 'snow safari' in the Peak District. Disappointing depths and we got to near Buxton before finding enough to sledge on. Going on pics and the ages of the girls, I reckon 2011 or 2012.


 


Originally Posted by: Saint Snow 


Could have been 2012? This was during the Easter holidays up here:


 


F1160-CCB-6-B0-F-4-F58-83-A5-4708-FD06558-C


The theme does seem quite consistent. To be honest I would prefer a warm sunny spell (but that is unfortunately irrelevant regarding what will happen!) 


April showers https://www.wetterzentrale.de/maps/ECMOPEU12_216_1.png 


 


Tim A
24 March 2021 19:20:53
Obviously there was 2013 as well, I remember going skiing near Halifax where they have a couple of small tow lifts on Good Friday (29th March), we still had snow cover across the Easter period, all from the snow on 21/22st March.

Tim
NW Leeds
187m asl

 My PWS 
Saint Snow
24 March 2021 19:54:14

Obviously there was 2013 as well, I remember going skiing near Halifax where they have a couple of small tow lifts on Good Friday (29th March), we still had snow cover across the Easter period, all from the snow on 21/22st March.

Originally Posted by: Tim A 


 


It definitely wasn't 2013. I remember that very well!



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
DEW
  • DEW
  • Advanced Member
24 March 2021 20:21:43

You only have to go back one year for a switcheroo at this time of year. Exactly one year ago, the first half of the first lockdown week was shirtsleeve weather for going out for a walk - but the second half of that week thick coats were needed.


War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl
glenogle
24 March 2021 20:40:39


A significant cold plunge from the north looks more and more likely this morning as we head to the start of April.  Could be some beefy snow showers to be had.


https://www.wetterzentrale.de/en/topkarten.php?map=1&model=ecm&var=2&run=0&time=240&lid=OP&h=0&mv=0&tr=24#mapref


 


Originally Posted by: Ally Pally Snowman 


Hope for some to get skiing once lockdown eases a bit.  Some of my best days skiing have been in April.


UserPostedImage LLTNP 105m asl 
Brian Gaze
24 March 2021 21:26:20


 


Hope for some to get skiing once lockdown eases a bit.  Some of my best days skiing have been in April.


Originally Posted by: glenogle 


I remember being on Cairngorm one April in the early 90s. The snow was down to the car park level and most or all of the runs were open. We didn't ski on that occasion but took the chairlifts up to the Ptarmigan cafe. Looking down to Loch Morlich was a magnificent sight.


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
BJBlake
25 March 2021 01:21:33

The GFS showing remarkably widespread snow falling on the 3rd April, 8 days too early for Buchanan’s second cold spell, but the cold could linger until then on this run.


Brecklands, South Norfolk 28m ASL

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