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DEW
  • DEW
  • Advanced Member
04 July 2020 19:11:10


 


That’s what we need. Something to disrupt the pattern. Particularly if it takes that track and erodes the AH from the South West. Not enough low pressure in SE USA this summer so far. 


Originally Posted by: TimS 


It doesn't make any significant impression on the GFS or ECM 12z, though to stretch chart analysis, it could be the foundation of the LP over Scotland on Thu 9th


I've also recorded it in the Hurricane and Cyclone season thread which beacuse of a quiet season was in danger of disappearing. If as likely it becomes a TS it will be called Dolly - please remember there are more bad jokes than good ones on that name


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

Chichester 12m asl
Rob K
05 July 2020 05:35:16
A much more settled picture on the 0Z GFS this morning.
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
Whether Idle
05 July 2020 06:03:04

A much more settled picture on the 0Z GFS this morning.

Originally Posted by: Rob K 


Yes, this cooler and unsettled interlude has its days numbered and high pressure looks set to settle things down as things warm up a little during the day at least.


Diagramme GEFS


Diagramme GEFS


Diagramme GEFS


Dover, 5m asl. Half a mile from the south coast.
DEW
  • DEW
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05 July 2020 09:02:25

Jetstream hangs on across the UK to Fri 10th after which it fades before resuming well to the north with occasional bursts in the Med. That remains the situation until Fri 17th when fragments start appearing nearer the UK and just a hint that it'll be back in force Tue 21st. So make the most of week 2!


GFS brings a depression across Scotland 995mb Fri 10th (which might be the remains of TD5/storm Dolly as discussed above) before showing ridge of HP aligned SW-NE for all the following week, before breaking down Sun 19th first with LP from Poland then one from the Atlantic with the UK just about hanging on to HP in a col in between


GEFS in the S, cool for now, about the seasonal norm Thu 9th with a little rain around; cool again and dry but rising to norm Thu 16th after which runs seriously diverge and maybe a little rain. Scotland and N England similar but for a 'little rain' read 'quite a bit of rain'.


ECM like GFS but LP on Fri 10th downplayed, while the following HP is more of a centre than a ridge.


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

Chichester 12m asl
Brian Gaze
05 July 2020 09:52:33

Steady as she goes. No real change this morning.



Brian Gaze
Berkhamsted
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Whether Idle
05 July 2020 20:46:46


Nice to see that forecast higher pressure has settled down the MO thread already, though the weather will take a day or two longer. 


Dover, 5m asl. Half a mile from the south coast.
Caz
  • Caz
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06 July 2020 04:44:14



Nice to see that forecast higher pressure has settled down the MO thread already, though the weather will take a day or two longer. 


Originally Posted by: Whether Idle 


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White Meadows
06 July 2020 06:38:50
Looking dry again this morning:
http://old.wetterzentrale.de/pics/MT8_London_ens.png 
Nothing like Mooms’ Monsoon
TimS
  • TimS
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06 July 2020 07:03:44

Looking dry again this morning:
http://old.wetterzentrale.de/pics/MT8_London_ens.png
Nothing like Mooms’ Monsoon

Originally Posted by: White Meadows 


That looks oddly different to the same one I was looking at.


 


Maybe a coordinates thing. Mine may be more inland hence more rain. 


Both same overall pattern though, and a warm up into mid July.


ECM warms up but then goes zonal and unsettled again. I assume that will be an outlier:



Brockley, South East London 30m asl
DEW
  • DEW
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06 July 2020 07:07:42

Getting a bit warmer, though the focus of the rain in week 2 shifts from the NW to the S coast linked to much wetter conditions over France. http://www.wxmaps.org/pix/prec4. This matches GFS rather than ECM synoptics


GFS - still a shallow depression hanging back Thu/Fri 9/10th across central UK after which HP across the whole country for a few days broken up Thu 16th by LP from continent linking eventually with Atlantic to give broad trough at first mainly in NW then for all UK Mon 20th. HP looks likely to re-assert itself Wed 22nd.


GEFS - as yesterday, cool for now, recovering to normal by about Thu 16th (but a short warmer spell for the S around Thu 9th). Rain also associated with this feature on the 9th in N of England and Scotland.then a dry spell before some more general rain from about the 16th


ECM - LP 9th/10th more shallow than GFS, but the HP to follow takes a different course from Tue 14th, soon moving southwards and depressions are then more defined and more mobile running across N of Scotland with a deep LP mid Atlantic 980mb mid Atlantic Thu 16th . The 'continental LP' quoted for GFS is placed in E Poland, not W Germany


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

Chichester 12m asl
Brian Gaze
06 July 2020 07:34:43

Continues to look old school to me. Turning into a very interesting summer.


Brian Gaze
Berkhamsted
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Hippydave
06 July 2020 07:52:13


Continues to look old school to me. Turning into a very interesting summer.


Originally Posted by: Brian Gaze 


The relative lack of heat and in particular hot nights, has certainly been a welcome change from recent years (down here). 


GFS and ECM seem to be moving to a warm up to above average in the day 8-10 day range although going downhill a bit after that with more in the way of unsettled weather. Before then there's a few days of cool 850s before a recovery to at or just above normal in the South, further North the warmer blip doesn't really make it and you have to go a few more days until you hit the warmer air.


Not dry, with some showers around, with slightly more rainfall in Northern and Western regions as you'd expect but nothing unusual or prolonged judging by the GFS ens. I guess with the warmer air in the south there's a chance that any showers could be heavier than the ens suggest and/or where the cooler and warmer air boundary is that could pep things up too. 


All in all a pleasant enough summer outlook, although not one for those who like days and days of heat and hot nights. I guess I should flag that GFS is showing what for a softie southerner are rather chilly day time maxes for Scotland in particular, for the next week or so although as temps are 18-21 down here it's sometimes hard to remember it can be very different weather outside of my back yard


Home: Tunbridge Wells
Work: Tonbridge
Rob K
06 July 2020 09:06:22
That's quite a vicious little low at the end of the ECM run, is that the ex TS?
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
DEW
  • DEW
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06 July 2020 09:41:45

That's quite a vicious little low at the end of the ECM run, is that the ex TS?

Originally Posted by: Rob K 


It looks rather like an ex-TS at T+240 but there's no corresponding TS feature in the T+216 so generated in situ like Dolly* was? And certainly too far in the future for anything related to current storm Edouard.


* See note in the Hurricane thread for the short-lived Dolly being missed; the current storm heading into the Atlantic is indeed Edouard.


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

Chichester 12m asl
TimS
  • TimS
  • Advanced Member
06 July 2020 11:27:41

Drier 06z on GEFS:



The relatively dry and warm ENS for Fort William (more so than London vs averages) and declining wind speeds suggests to me a North Atlantic blocking pattern and quite a few runs with Easterlies:




Brockley, South East London 30m asl
doctormog
06 July 2020 11:46:21
Thankfully there does not seem to be an easterly dominance parent on the ensemble data here

http://www.meteociel.fr/cartes_obs/gens_display.php?x=&y=&run=6&lat=57.2&lon=-2.3&runpara=0&type=4&ext=1 
picturesareme
06 July 2020 12:02:00


Drier 06z on GEFS:



The relatively dry and warm ENS for Fort William (more so than London vs averages) and declining wind speeds suggests to me a North Atlantic blocking pattern and quite a few runs with Easterlies:




Originally Posted by: TimS 


Very clearly the London one's are notably warmer then the Scottish one's.

doctormog
06 July 2020 12:18:10


 


Very clearly the London one's are notably warmer then the Scottish one's.


Originally Posted by: picturesareme 


And in other breaking news: a bear had been found defecating in a large arboreal area.


Saint Snow
06 July 2020 13:40:34


The relatively dry and warm ENS for Fort William (more so than London vs averages) and declining wind speeds suggests to me a North Atlantic blocking pattern and quite a few runs with Easterlies


Originally Posted by: TimS 


 


That would be very welcome!



Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
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Aneurin Bevan
TimS
  • TimS
  • Advanced Member
06 July 2020 14:26:00


 


Very clearly the London one's are notably warmer then the Scottish one's.


Originally Posted by: picturesareme 


”vs averages”


Brockley, South East London 30m asl
moomin75
06 July 2020 16:59:39
Highly encouraging signs on the latest GFS and also on UKMO for a significant settling down from the weekend onwards. Getting increasingly warm on the 12z GFS with a real burst of heat deep into FI.
Is summer about to return just in time for my first games of cricket this year?
Witney, Oxfordshire
100m ASL
Downpour
06 July 2020 17:10:23

Highly encouraging signs on the latest GFS and also on UKMO for a significant settling down from the weekend onwards. Getting increasingly warm on the 12z GFS with a real burst of heat deep into FI.
Is summer about to return just in time for my first games of cricket this year?

Originally Posted by: moomin75 


Would be nice Moomin! The Test starts Wednesday - probably a couple of days too early!


Chingford
London E4
147ft
Whether Idle
06 July 2020 17:40:31

Highly encouraging signs on the latest GFS and also on UKMO for a significant settling down from the weekend onwards. Getting increasingly warm on the 12z GFS with a real burst of heat deep into FI.
Is summer about to return just in time for my first games of cricket this year?

Originally Posted by: moomin75 


This short running tide may indeed be turning 


Dover, 5m asl. Half a mile from the south coast.
Brian Gaze
06 July 2020 17:54:25

Agree it is worth keeping an eye on. However, on balance it still looks fairly average to me.


 



Brian Gaze
Berkhamsted
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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan
GezM
  • GezM
  • Advanced Member
06 July 2020 18:13:43

In the more immediate future, the next 3 days look pretty poor in the south of England and Wales. A set of trailing fronts will move west to east across these parts and will give us dull, damp weather. It wouldn't surprise me if some parts got a real soaking out of this. Difficult to work out where the north and south boundaries of this weather is going to be from day to day but the rain will wiggle around and so most parts will get something.

What I hate most about this set up is that the near continent to the south of the warm front will be enjoying lots of lovely warm (almost hot weather) with Paris expecting 28C on Thursday. Reminds me of some of the summers of the last decade.


Living in St Albans, Herts (116m asl)
Working at Luton Airport, Beds (160m asl)

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