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Tom Oxon
25 May 2021 09:52:18
Post bank-holiday downgrades continue this morning on the ECM op with a NW airflow established towards the latter part of next week with rain/showers:

https://www.wetterzentrale.de/maps/ECMOPEU00_216_1.png 

GFS paints a much more optimistic picture for northern Britain

https://www.wetterzentrale.de/maps/GFSOPEU00_216_1.png 

Southern Britain looking quite unsettled and potentially thundery. The GFS solution is much warmer, so battle lines are drawn.
S Warwickshire countryside, c.375ft asl.
Hungry Tiger
25 May 2021 10:03:55


Azores high pressure: "The reports of my demise are greatly exaggerated". 



Originally Posted by: Brian Gaze 


Thank God for that.


 


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


NMA
  • NMA
  • Advanced Member
25 May 2021 10:38:07


I honestly don't mind if any coming warmth is associated with rain as warm rain is good for plants and growth in general. My plants are all battered and bruised from that constant chilly wind and those hail and icy rain showers that have been the main theme of this Spring so far. 


Originally Posted by: Chunky Pea 


True as I can put up with 'warm' rain too. It's the incessant low maximums and gales I find hard to accept. As improbable as it seems I believe some places on the South Coast have yet to reach the magic 21C this year. Places like Portland Island for example perhaps.


 


Vale of the Great Dairies
South Dorset
Elevation 60m 197ft
Downpour
25 May 2021 10:45:45

Think we're firming up on a dry and sunny BH, albeit nothing stellar temperature wise. Somewhere in Scotland might squeak the low 20s.

Beyond that quite a downgrade from the ECM this morning into next week, although not seen the ens.

Originally Posted by: Tom Oxon 


BBC going for a classic NW/SE split into next week – with by far the best of the weather down south.


We'll see. 


Chingford
London E4
147ft
moomin75
25 May 2021 11:12:54
The deluge returns in early June on the GFS 6Z. Just hope that the mean is better than the Op, because if this one is near the mark, a June washout would be on the cards, akin to 2007.
Witney, Oxfordshire
100m ASL
David M Porter
25 May 2021 11:35:53

The deluge returns in early June on the GFS 6Z. Just hope that the mean is better than the Op, because if this one is near the mark, a June washout would be on the cards, akin to 2007.

Originally Posted by: moomin75 


With respect, I think that is a very big 'if', IMO Kieren.


Lenzie, Glasgow

"Let us not take ourselves too seriously. None of us has a monopoly on wisdom, and we must always be ready to listen and respect other points of view."- Queen Elizabeth II 1926-2022
moomin75
25 May 2021 11:41:48


 


With respect, I think that is a very big 'if', IMO Kieren.


Originally Posted by: David M Porter 

It is a very big "if" but "if" the 6z Op is anywhere near the mark, it would be pretty horrendous with severe flooding likely.


Thankfully, it all starts out past day eight at the moment, so not in reliable time frame, and I expect the latter stages to be a wet outlier.


Witney, Oxfordshire
100m ASL
Downpour
25 May 2021 11:44:46


It is a very big "if" but "if" the 6z Op is anywhere near the mark, it would be pretty horrendous with severe flooding likely.


Thankfully, it all starts out past day eight at the moment, so not in reliable time frame.


Originally Posted by: moomin75 


Yes, FI charts. 


Of course some members will focus on them, rather than the lovely weather in the reliable. 


Chingford
London E4
147ft
moomin75
25 May 2021 11:46:02


 


Yes, FI charts. 


Of course some members will focus on them, rather than the lovely weather in the reliable. 


Originally Posted by: Downpour 

Nope, not focusing on them, as I say, unlikely, and at the very least probably OTT, but cannot be ruled out either.


Witney, Oxfordshire
100m ASL
Saint Snow
25 May 2021 11:49:11

Little in the way of prolonged settled weather in this morning's output.


Perhaps a week of better weather, but all a bit unstable, with too much in the way of Atlantic lows in the wrong position to our NW, waiting to collapse the block.


Far rather have the block just to the north of the UK, with lows deflected to our south.



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
Downpour
25 May 2021 11:58:01


Little in the way of prolonged settled weather in this morning's output.


Perhaps a week of better weather, but all a bit unstable, with too much in the way of Atlantic lows in the wrong position to our NW, waiting to collapse the block.


Far rather have the block just to the north of the UK, with lows deflected to our south.


Originally Posted by: Saint Snow 


Likely evolution is a NW/SE split I think, but hopefully the AH develops east more strongly and gives a more settled picture nationwide. As the old adage goes: Get the high in first, before worrying about what’s next!


Chingford
London E4
147ft
Joe Bloggs
25 May 2021 12:22:30

Can I just say - I love how passive aggressive this thread has become.


I know it is the same every year to an extent, but it’s become a lovely little ritual to read the posts, quietly chuckle to myself as I watch the subtle and defensive digs come out.


Most entertaining. 😂😂😂 


A nice light hearted diversion from the pandemic anyway. 👍



Manchester City Centre, 31m ASL

GezM
  • GezM
  • Advanced Member
25 May 2021 13:50:57

A few days ago the GFS Op run was frequently warmer than the ENS mean for the period May 29 to June 3. Now the mean has risen up to about the same value for that time period. Next we have started to see the Op run below the mean for the period after June 3. 


Question - does anybody know if the Op run tends to be a trendsetter that brings the mean closer to it, or does it tend to meander randomly up and down the ensembles? 


If the answer is the former, then perhaps we do need to worry about June 3 onwards!


Living in St Albans, Herts (116m asl)
Working at Luton Airport, Beds (160m asl)
Gooner
25 May 2021 13:57:26

Chart image


6z at the bottom end of the pack


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


Jiries
25 May 2021 14:14:32


Chart image


6z at the bottom end of the pack


Originally Posted by: Gooner 


Look like decent temps of low to mid 20's will be very welcome.  Once that arrive time to look for heatwave chasing.

Downpour
25 May 2021 14:22:39


 


Look like decent temps of low to mid 20's will be very welcome.  Once that arrive time to look for heatwave chasing.


Originally Posted by: Jiries 


 


Indeed, get the high in first and think about developments later (personally I would rather avoid heatwaves although conscious that other members think differently!) 


Chingford
London E4
147ft
Downpour
25 May 2021 14:23:59


Chart image


6z at the bottom end of the pack


Originally Posted by: Gooner 


Interesting. 


There is a tendency for the models to throw out wild outliers in FI in pattern-change scenarios – not say this particular Op should be totally discounted but the phenomenon is something I have noted over the years. 


Chingford
London E4
147ft
moomin75
25 May 2021 16:33:21
UKMO at 144hrs breaks down the fine weather earlier than GFS. Would never back against UKMO, but very disappointing to see.
Witney, Oxfordshire
100m ASL
moomin75
25 May 2021 17:16:33
GFS really is laughable. Wildly fluctuating runs, fron floodfest 6z to high pressure all the way on the 12z. UKMO is looking poor at 144hrs today and brings the unsettled weather back quickly. That is probably the form horse, you simply can't back fluctuating GFS runs.
Witney, Oxfordshire
100m ASL
Polar Low
25 May 2021 17:22:16

But gfs says NO and a smashing run best so far let’s hope it’s not top end


Mean at 120 no break down in sight


https://www.meteociel.fr/modeles/gefs_cartes.php?code=31&ech=120&mode=0&carte=0


 


 


 



UKMO at 144hrs breaks down the fine weather earlier than GFS. Would never back against UKMO, but very disappointing to see.

Originally Posted by: moomin75 

moomin75
25 May 2021 17:25:13


But gfs says NO and a smashing run best so far let’s hope it’s not top end


Mean at 120 no break down in sight


https://www.meteociel.fr/modeles/gefs_cartes.php?code=31&ech=120&mode=0&carte=0


 


 


 


 


Originally Posted by: Polar Low 

Which is more plausible? The wildly fluctuating GFS or the UKMO which appears a bit steadier?


Witney, Oxfordshire
100m ASL
Polar Low
25 May 2021 17:28:55

The more experienced members would probably say a blended solution but I’d like gfs but can’t rule out ukmo it’s been right many times before.


ps 


ive had some rotten BH weekends feed up over the years of bond moves let’s hope for a good summer we all deserve it 


 




Which is more plausible? The wildly fluctuating GFS or the UKMO which appears a bit steadier?


Originally Posted by: moomin75 

moomin75
25 May 2021 17:30:22


The more experienced members would probably say a blended solution but I’d like gfs but can’t rule out ukmo it’s been right many times before.


ps 


ive had some rotten BH weekends feed up over the years of bond moves let’s hope for a good summer we all deserve it 


 


 


Originally Posted by: Polar Low 

GEM is pretty slow tonight, but seems to be backing the UKMO solution, quickly returning to unsettled.


Witney, Oxfordshire
100m ASL
Brian Gaze
25 May 2021 17:33:21

The mean doesn't tell everything of course, but I wouldn't be backing a washout with this.



 


Brian Gaze
Berkhamsted
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doctormog
25 May 2021 17:34:26


Which is more plausible? The wildly fluctuating GFS or the UKMO which appears a bit steadier?


Originally Posted by: moomin75 


It doesn’t seem any steadier at that range to me? I think I will embrace and enjoy the ether more settled conditions before worrying about what may come after.


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