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JACKO4EVER
21 July 2020 10:34:59


 


Do you have facts for sunshine hours vs average in the SE this week?


I’m on a biking holiday throughout Essex and Suffolk.


I dare say if you asked anyone here they would say this was glorious weather. 


 


Originally Posted by: Downpour 


I’m quite sure you can navigate the site to find your IMBY information for the south east, you've been on here long enough now. 
watch for those pot holes, you’ll find they are nationwide 

tallyho_83
21 July 2020 13:47:37

Not quite 'model' related but take a look at the latest QBO? confused.com 


Does anyone think this easterly QBO will fail?


 



Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
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Magical Moon
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DEW
  • DEW
  • Advanced Member
22 July 2020 07:00:19

Jetstream still weak but picking up strongly across or just S of the UK by Sat 25th then forming a loop by Wed 29th with the uk on the 'wrong' side. Soon back to a W-ly again just S of the UK though less strong, and winding itself into another loop Fri 7th (though for the optimists, that loop has a strong southerly component and could bring up warmth from Spain)


GFS - current ridge slowly collapsing and LP trough covering UK Sun 26th; another ridge forms W of Ireland mid week (Wed 29th) but gives way to another Atlantic trough Sun 2nd; which amalgamates with more Atlantic troughs and develops into a well defined LP in the SW approaches  Fri 7th (and again for the optimists, if the centre of that LP turns out 100 miles further W than forecast, we will get a heat wave -and for the pessimists, if it's 100 miles further E then the the weekend is a washout!)


GEFS temps at or below seasonal norm throughout, coolest periods around Wed 29th and Mon 3rd and a lot of variation toward end of run. Small amounts of rain at any time in the S from Sat 25th onward, larger amounts more frequently the further N you go.


ECM similar to GFS to ca Wed 29th but the ridge then intensifies and moves E and is over the UK Fri 31st with quite a deep LP off SW Ireland and S-ly winds well established


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

Chichester 12m asl
Rob K
22 July 2020 07:33:21
First signs of a blowtorch setting up in early August? Lots of scatter on the ensembles but some scorchers in there. One to keep an eye on maybe.
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
some faraway beach
22 July 2020 09:13:35
I suppose the presence of blowtorches in the ensemble alongside a lot of scatter ties in with DEW's analysis of the GFS on day 15. A mere 200-mile difference in the centring of a low spells the difference between a blowtorch and a washout.

This is what makes monitoring model output so frustrating when it comes to actually poking your nose outside to experience the weather. The output could be astonishingly accurate at a 15-day range and still give two diametrically opposite outcome in terms of actual weather. Well, at least in this country, anyway.
2 miles west of Taunton, 32 m asl, where "milder air moving in from the west" becomes SNOWMAGEDDON.
Well, two or three times a decade it does, anyway.
Rob K
22 July 2020 10:50:09

And sure enough the 06Z so far has high pressure more in evidence across the south than the unsettled 0Z Gfs


 


But interestingly run 7 of the GEFS 0Z, which has blowtorch 20C+ 850s, only gives 2m max temps of around 25-26C! Reminds me of the spell last summer when near-record high 850s gave notably unremarkable maxima. 


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
Gusty
22 July 2020 11:32:57

Blowtorch 850Hpa's stand for nothing when you have the jet stream firing away so close to the UK. Such spikes are normally associated with intense rainmakers and should be viewed upon for observations purposes only rather than T2M indicators. 


Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
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Saint Snow
22 July 2020 11:47:22

I suppose the presence of blowtorches in the ensemble alongside a lot of scatter ties in with DEW's analysis of the GFS on day 15. A mere 200-mile difference in the centring of a low spells the difference between a blowtorch and a washout.

This is what makes monitoring model output so frustrating when it comes to actually poking your nose outside to experience the weather. The output could be astonishingly accurate at a 15-day range and still give two diametrically opposite outcome in terms of actual weather. Well, at least in this country, anyway.

Originally Posted by: some faraway beach 


 


Yeah, our biggest problem is they we're always on that borderline. Our geographical location is pretty pants for settled or consistent conditions



Martin
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Brian Gaze
22 July 2020 12:07:21

In recent years the south east of the UK (and at times more widely) has found itself inside the west European heat dome. As far as I can see the problem this year is that it hasn't really developed. I think Cohen's latest blog suggests that summer in much of Europe has been cooler than average so far.  


Brian Gaze
Berkhamsted
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GezM
  • GezM
  • Advanced Member
22 July 2020 14:32:34


In recent years the south east of the UK (and at times more widely) has found itself inside the west European heat dome. As far as I can see the problem this year is that it hasn't really developed. I think Cohen's latest blog suggests that summer in much of Europe has been cooler than average so far.  


Originally Posted by: Brian Gaze 


There are some indications of warmer weather edging north into France if you look at the 10 day temperature forecasts.


http://wxmaps.org/pix/temp4


Not sure if it will be temporary, but if it continues then the chances of brief hot incursions into the southern UK at least would increase. 


Living in St Albans, Herts (116m asl)
Working at Luton Airport, Beds (160m asl)
DEW
  • DEW
  • Advanced Member
23 July 2020 07:01:02

10-dayer not offering much change in temps  from the present setup. Perhaps a bit more rain in the S later.


GFS this morning - broad area of LP from Sun 26th for a couple of days. Ridge in Atlantic Wed 29th toppling as new LP establishes Sat 1st and deepens Mon 3rd. Eventually another ridge Sat 8th. The forecast isn't stable for more than a week or so; it looks rather different to yesterday.


GEFS temps down ca Sun 26th & Wed 29th; up in between those dates(not Scotland) & again Sat 1st after which lots of variation at or a bit below seasonal norm. Chances of rain at any time especially Wed 29th in S, Sat 25th in Scotland.


ECM has deeper LP off W coast (GFS has it shallower and off to the NW) Sat 1st fetching in lots of warmth and (briefly) HP - looks like the traditional 3 fine days and a thunderstorm


 


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

Chichester 12m asl
Rob K
23 July 2020 07:49:04
Definitely signs of a brief plume around August 1st, both on the ECM and on the GEFS, even if not really supported by the operational.

Still nothing very settled though. Hoping for a more widespread HP influence into mid August as I have a week booked in the Lake District. At the moment that looks very much the wrong direction to be travelling!
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
Sevendust
23 July 2020 07:57:54

Definitely signs of a brief plume around August 1st, both on the ECM and on the GEFS, even if not really supported by the operational.

Still nothing very settled though. Hoping for a more widespread HP influence into mid August as I have a week booked in the Lake District. At the moment that looks very much the wrong direction to be travelling!

Originally Posted by: Rob K 


Some rain chances at the weekend and up to midweek for the parched south. Yes a brief plume looking a possibility as a low stalls at month end but little change in the overall pattern

wallaw
23 July 2020 08:19:42

Definitely signs of a brief plume around August 1st, both on the ECM and on the GEFS, even if not really supported by the operational.

Still nothing very settled though. Hoping for a more widespread HP influence into mid August as I have a week booked in the Lake District. At the moment that looks very much the wrong direction to be travelling!

Originally Posted by: Rob K 


 


I will be in Glenridding from 1st August for a week, any lingering hope I had for an improvement to warm and dry (settled) weather for that period has now disappeared. looks like the overall pattern is here for a while longer yet.


Ian


Stockton-on-Tees

fairweather
23 July 2020 20:11:06


In recent years the south east of the UK (and at times more widely) has found itself inside the west European heat dome. As far as I can see the problem this year is that it hasn't really developed. I think Cohen's latest blog suggests that summer in much of Europe has been cooler than average so far.  


Originally Posted by: Brian Gaze 


In this S.E corner I wouldn't say that was the case. Here in S.Essex we have had only three rainfall events over 10mm since March. It has been exceptionally dry. Whilst the hot spells haven't been prolonged the background warmth has and if you take an "average" sort of day like today the temperature soon shot up to 26C as soon as the sun was out. I don't have the sunshine hours but am pretty sure they are above average.


S.Essex, 42m ASL
Downpour
23 July 2020 22:40:39


 


In this S.E corner I wouldn't say that was the case. Here in S.Essex we have had only three rainfall events over 10mm since March. It has been exceptionally dry. Whilst the hot spells haven't been prolonged the background warmth has and if you take an "average" sort of day like today the temperature soon shot up to 26C as soon as the sun was out. I don't have the sunshine hours but am pretty sure they are above average.


Originally Posted by: fairweather 


Absolutely right. 


This has been a ‘decent‘* summer so far for the SE east of the Chiltern Hills - a very different experience to those west and north of the higher elevations.


It’s worth remembering that something like 20 million people live south of the Wash and east of the Chilterns - a third of the UK population and more than the populations of Scotland, NI and the north of England combined. 


It seems odd to cry “IMBY” as if the SE is some sort of hyper-local microclimate. 


It isn’t. It just has a notably different climate to points north and west.


(*if you like endless days of near drought - good for doing stuff, not so good for the gardens) 


Chingford
London E4
147ft
picturesareme
24 July 2020 00:23:51


 


Absolutely right. 


This has been a ‘decent‘* summer so far for the SE east of the Chiltern Hills - a very different experience to those west and north of the higher elevations.


It’s worth remembering that something like 20 million people live south of the Wash and east of the Chilterns - a third of the UK population and more than the populations of Scotland, NI and the north of England combined. 


It seems odd to cry “IMBY” as if the SE is some sort of hyper-local microclimate. 


It isn’t. It just has a notably different climate to points north and west.


(*if you like endless days of near drought - good for doing stuff, not so good for the gardens) 


Originally Posted by: Downpour 


Good old classic summer herr

DEW
  • DEW
  • Advanced Member
24 July 2020 07:11:27

Jetstream continues across UK to Thu 30th  though weakening; resumes over France Sun 2nd and slowly moves N again to cover UK through to Sun 9th though at end of this period more of a S/SW than W flow.


GFS - various LP centres moving across UK (notably Mon 27th, Sun 2nd, Fri 7th) with brief weak ridges of HP between (weaker than shown yesterday) - just a glimmer of hope in the final frame on Sun 9th with the last LP in the sequence much shallower, a general rise in pressure and  air from the S, not the N.


GEFS -Much more marked variation in temps than previously with some big swings in the S - cool Wed 29th, and Mon 4th, warm (very warm op & control +%C above norm) Sat 1st and again Fri 7th though still quite a lot of just below norm runs. A couple of early episodes of rain then back to drought. N England shows similar temp variation but with more rain esp around Sat 1st; Scotland gets the rain and a flattened temp profile.


ECM slow to load this morning; 0z run initially similar to GFS, valid to Wed 29th; but then yesterdays 12z retains the LP off the SW Fri 31st with strong S-ly & v warm, as previously, declining to zonal w-lies by Sun 2nd


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

Chichester 12m asl
doctormog
24 July 2020 07:14:06


Jetstream continues across UK to Thu 30th  though weakening; resumes over France Sun 2nd and slowly moves N again to cover UK through to Sun 9th though at end of this period more of a S/SW than W flow.


GFS - various LP centres moving across UK (notably Mon 27th, Sun 2nd, Fri 7th) with brief weak ridges of HP between (weaker than shown yesterday) - just a glimmer of hope in the final frame on Sun 9th with the last LP in the sequence much shallower, a general rise in pressure and  air from the S, not the N.


GEFS -Much more marked variation in temps than previously with some big swings in the S - cool Wed 29th, and Mon 4th, warm (very warm op & control +5C above norm) Sat 1st and again Fri 7th though still quite a lot of just below norm runs. A couple of early episodes of rain then back to drought. N England shows similar temp variation but with more rain esp around Sat 1st; Scotland gets the rain and a flattened temp profile.


ECM slow to load this morning; 0z run initially similar to GFS, valid to Wed 29th; but then yesterdays 12z retains the LP off the SW Fri 31st with strong S-ly & v warm, as previously, declining to zonal w-lies by Sun 2nd EDIT 0Z NOW AVAILABLE and could be quite exciting - if it verifies, flood of warm air from that LP on Fri 31st followed up by thundery looking LP on Sun 2nd.


Originally Posted by: DEW 


Thanks. It’s good and helpful to get a nice overall summary of things. 


It continues to look rather mobile overall. 


Sevendust
24 July 2020 09:23:28


Thanks. It’s good and helpful to get a nice overall summary of things. 


It continues to look rather mobile overall. 


Originally Posted by: doctormog 


Standard - but next weekend has a look of "thundery" about it 

Ally Pally Snowman
24 July 2020 17:49:00

I spy with my little eye something beginning with p.


 


 


 



 


Bishop's Stortford 85m ASL.
GezM
  • GezM
  • Advanced Member
24 July 2020 19:18:33


I spy with my little eye something beginning with p.


 


 


 



 


Originally Posted by: Ally Pally Snowman 


Precipitation? 


 


Living in St Albans, Herts (116m asl)
Working at Luton Airport, Beds (160m asl)
Sevendust
24 July 2020 20:51:48

Plumage


 

Tim A
25 July 2020 07:32:42

GFS this morning produces a good summery run with it not cooling off after the push of warm air next Friday. At the top of the ensembles though. ECM also very different and reverts to the cooler westerlies we become familiar with.


Tim
NW Leeds
187m asl

 My PWS 
Ally Pally Snowman
25 July 2020 08:46:01


Plumage


 


Originally Posted by: Sevendust 


 


Indeed lovely plumage . 


 


ECM gets very close to bringing 20c 850s this morning. 


Bishop's Stortford 85m ASL.

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