The Weather Outlook

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Brian Gaze
04 June 2025 14:28:43
ECM ENS 2m maximum temperature forecast charts are now rolling out. I've split them into two sets because up to T+144 they use 3-hour intervals, after which they switch to 6-hour steps. The options in the chart viewer are labelled as '2m max temp 1' and '2m max temp 2'. They will automatically appear if you have premium access.

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

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Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

Brian Gaze
04 June 2025 17:19:40
More signs of much warmer weather next week? Blow torch on the way? Totally unscientific, but I've got a good feeling about this summer and have done for a while. 🙂

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Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

DEW
  • DEW
  • Advanced Member
05 June 2025 07:44:01
GFS Op 00z: current LP east of Iceland projecting troughs far enough south to affect all of Britain today and Saturday, but nothing dramatic. Then pressure rises 1025mb England Tue10th/Wed 11th and shifts E-wards as pressure drops mid-Atlantic. This combination generates warm S-lies for a few days before the Atlantic moves in and installs a trough 1000mb over Britain Sat 14th. Virtually a repeat performance for the following week, starting Tue 17th, , though this time the Atlantic low heads a little further south on Sat 21st, and suggests  warmer SE-lies for longer.

ECM; similar to GFS until end of run when the trough for Sat 14th stays further west and the run of warm S-lies persists.

GEFS;  for the S, cool-ish now but becoming warm Fri 13th (7 or 8C above norm, good ens agreement), mean dropping back to norm by Sun 15th with a balanced spread of warmer and cooler runs. Some rain (not much) agreed for the next few days, a few ens members have enormous (?thundery) falls of rain Sat 14th / Sun 15th. In the N temp profile similar though not so exaggerated a heat wave next week; rain in small amounts liable at any time and the spikes around the 14th less prominent

ECMHR like GFS but moves the heavy rain a day earlier, to 13th/14th, and includes in in more ens members


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

Rob K
05 June 2025 10:04:29
It's looking increasingly like the heat will arrive sooner, but only for a short time, at least at first. A brief warm pulse middle of next week, followed by a more unsettled interlude over the weekend followed by perhaps a longer settled spell the week after.
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

Taylor1740
05 June 2025 17:16:49
GFS 12z backing off the plume big time now. Looking at low-mid 20s at most now. Could we be heading for a cooler than average June and maybe even a cooler summer overall?
NW Leeds - 150m amsl
DEW
  • DEW
  • Advanced Member
06 June 2025 07:43:16
GFS Op 00z; trough passing through tomorrow , pressure rising behind and by Wed 11th HP 1020mb over Britain. The next Atlantic LP approaches slowly and generates a brief S-ly blast but by Fri 13th LP  is close enough to cut off the S-lies and affect (mainly W) Britain. Reload of HP Tue 18th , brief partial collapse (perhaps some thundery invasion from the S?) before settling mid-Atlantic Sun 22nd with broad ridge to Britain.

ECM;  similar to GFS, both the op run and ens charts, though the latter become less and less certain 10 days out

GEFS; from cool now to very warm Thu 12th, soon dropping back to a little above norm as ens members spread out. Rain in the next day or so, chances of more around Thu 12th but not the big totals predicted yesterday (a few ens exceptions in the E still presenting heavy rain). Fairly dry after that.


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

cultman1
06 June 2025 10:18:48
I am more likely to refer to Brian’s summer forecast and I do not believe we are heading for a cooler summer overall just because we are in for a few days of poor weather . I also believe next week from Wednesday will trend much warmer at least for the south 
The Beast from the East
06 June 2025 10:40:17
GFS 06z looking very wet for the south on thursday night with a thundery plume.   Like the old saying about English summer "2 hot days followed by a thunderstorm"
Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

fairweather
06 June 2025 11:14:53

GFS 12z backing off the plume big time now. Looking at low-mid 20s at most now. Could we be heading for a cooler than average June and maybe even a cooler summer overall?

Originally Posted by: Taylor1740 

Anything in the mid 20's is perfect provided it is sunny and not too windy.


S.Essex, 42m ASL
06 June 2025 11:30:43
Good Ole GFS with its lemmings fully attached winter and summer.

Disclaimer, other models exist.


Berkshire
Brian Gaze
06 June 2025 11:54:54
ECM ENS postage stamp charts showing forecast max 2m temperatures from all 50 perturbations plus the control run are now available to premium members on the chart viewer. The link is:

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

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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

DEW
  • DEW
  • Advanced Member
06 June 2025 13:05:59

Good Ole GFS with its lemmings fully attached winter and summer.

Disclaimer, other models exist.

Originally Posted by: The Dub Version 

Keep going, which would YOU recommend?


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

Brian Gaze
06 June 2025 17:17:34
The Canadian model fires up the blow torch! At the moment I still don't think this is the favoured solution next week. That said....I wouldn't rule it out yet.

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Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

Devonian
06 June 2025 18:00:45

GFS 12z backing off the plume big time now. Looking at low-mid 20s at most now. Could we be heading for a cooler than average June and maybe even a cooler summer overall?

Originally Posted by: Taylor1740 

With SSTs where they are and a 1.5C uplift across the planet? Unlikely.

White Meadows
07 June 2025 06:01:36
Met office mid and long term narrative has seen more flip-flops than I can remember the past couple of weeks. June and July originally looked awful but now things have improved drastically.

Ally Pally Snowman
07 June 2025 07:32:47
Scorchio GEM and ECM this morning poor GFS though.  AIFS also v good. 
Bishop's Stortford 85m ASL.
Ally Pally Snowman
07 June 2025 07:37:38
The ECM this morning really is roasting 19c 850s by 120h. And the heat never leaves out to 360h. 

https://www.wetterzentrale.de/en/topkarten.php?map=20&model=ecm&var=2&run=0&time=120&lid=OP&h=0&mv=0&tr=24#mapref 


Bishop's Stortford 85m ASL.
Polar Low
07 June 2025 07:43:22

The ECM this morning really is roasting 19c 850s by 120h. And the heat never leaves out to 360h. 

https://www.wetterzentrale.de/en/topkarten.php?map=20&model=ecm&var=2&run=0&time=120&lid=OP&h=0&mv=0&tr=24#mapref 

Originally Posted by: Ally Pally Snowman 

Absolutely, cracking stuff gm finishing on a secondary heat pump unbelievable runs it’s getting nearer folks

https://www.meteociel.fr/modeles/geme_cartes.php?&ech=240&mode=0 

DEW
  • DEW
  • Advanced Member
07 June 2025 07:44:09
GFS Op 00z: Trough passing across Britain today. Rise of pressure behind resolves by Wed 11th into HP 1020mb N Sea while LP mid-Atlantic and Biscay pump up warm S-lies. The Atlantic LP takes over and rather slowly moves to cover Britain, filling as a shallow low 1015mb Sat 14th. Another HP cell moves up from the SW but sticks W of Ireland allowing LPs to move down from the NW, 1000mb Shetland Wed 18th and 1000 mb N Sea Mon 23rd with cool weather for N Sea coasts.

ECM: as GFS to Sat 14th but LP on that date stays out to the NW and the following HP extends a ridge from its Atlantic centre to Norway

GEFS: after today, the next rain is scheduled around Fri 13th associated with the breakdown of a brief but very warm spell. After that mean temps area little above norm; most ens members are warmer than that esp in the east but the average is dragged down by some rather cold members notably both op and control from Wed 18th. Occasional small amounts of rain after the 13th. ECM ens similar though warmer relative to norm in Scotland at that time


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

The Beast from the East
07 June 2025 09:03:47

Scorchio GEM and ECM this morning poor GFS though.  AIFS also v good. 

Originally Posted by: Ally Pally Snowman 

UKMO also good for heat fans. the atlantic trough staying out west so we dont really get a breakdown. 

Wednesday could hit 30 in london, so whoever predicted that first could win Brian's prize


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Brian Gaze
07 June 2025 10:01:24
ECM looking very toasty at times. I've had a good feel (from someone who likes hot weather) about this summer for quite a while.

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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

cultman1
07 June 2025 11:45:44
I concur ! 
The Beast from the East
07 June 2025 15:59:19
Looks like a downgrade for UKMO. In line with GFS for friday temporary breakdown
Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Chunky Pea
07 June 2025 16:15:42
Next Thursday seems to be bookmarked for potentially thundery conditions. Good conditions for grass seedlings to take root. 
Patrick,

East Galway, Ireland.

07 June 2025 16:27:28
Not sure single lightning strike in whole of UK let alone thunderstorms. Fail.
Berkshire

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