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Hungry Tiger
18 May 2022 13:38:12


 


 


You sure about this?


Traditional summer was 21st June to 21st Sept. August has been either joint warmest or second warmest month on average for as long as I can remember - was it any different 100/200 years ago?


 


I think, though, that Augusts have been the worst-performing summer month since 2003 (in terms of deviation from average temp/sun/rain days)


 


Originally Posted by: Saint Snow 


Meteorologically and climatically August has always been a summer month - What I was referring to was how August was perceived pastorally and before the 14-18 War in the countryside it was seen as a borderline autumn month.


Some of this perception I think derived from the catastrophic weather of August 1912. August 1912 still hold the record for "The bad threes".


Those were.



  1. The coldest month ever.

  2. The wettest month ever.

  3. The dullest month ever.


 


No month before or since has ever held all 3 of these bad records. The rainfall was colossal and culminated in the disastrous flooding of Norwich city centre following a downpour which dropped 200mm of rain in less than 24 hours.


The floodline on a building where the rivers Yare and Wensum meet in the middle of Norwich show a plaque at least 8 feet above my head and I stand 6foot 2 inches tall - So you can get an idea of what it was like.


What was even worse was the flooding was so violent that several buildings collapsed into the rivers killing 6 people.


I've read several times what August 1912 was like, and no way would I want to live through anything like that ever.


 


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


TimS
  • TimS
  • Advanced Member
18 May 2022 19:25:15

Not sure I've ever seen 34C in Southern England on a chart for the very start of June before. (Or indeed 36C in France in May as the chart 2 days before shows).



Brockley, South East London 30m asl
White Meadows
19 May 2022 04:38:05
The north/ south split continues to be shown in most output. Potentially very warm for Jubilee week in the south, sniffs of some true continental heat even… while other parts suffer much cooler and wetter conditions.
DEW
  • DEW
  • Advanced Member
19 May 2022 08:07:16

Temp summary charts looking rather like the see-saw of a couple of days ago, rather than yesterday's overall improvement. Week1, warmth flirting with England and the N Sea coastal countries while cooler air extends S-wards over W Russia; week 2, W Russia warms up a bit while cooler air pushes S-wards down the N Sea. Rain - week 1 generally in a band across N Europe incl UK; week 2 mostly over C Europe (Germany to Belarus and Sweden to Balkans, E coast of UK catching the edge of this, drier in SW.


Jet fragmented around the UK to Tue 23rd, then a more definite W-ly Tue 30th becoming NW-ly  before fading away. 


GFS Op shows current LP off W Ireland moving N then NE to Faeroes by Mon 23rd, and sticking there, sometimes stronger, sometimes weaker, sometimes pushing a trough S-ward into UK esp Tue 24th and Sun 29th. HP then develops over Rockall, again moving around a little, but generating NE-lies for England esp noticeable Tue 31st


GEFS for the S has temps returning to norm, then warm around 23rd, the mean near norm to Sat 4th but with the Op as one of the cooler members and control as one of the warmer ones. Rain spikes tomorrow, in many ens members Tue 24th, small amounts thereafter. In the N, slightly cooler (no warm bump on 23rd) and rain more generally from Sun 21st onwards with significant amounts in NW


ECM resembles GFS except that the trough on Sun 29th is a separate development from the LP to the N, and is positioned over W Ireland


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

Chichester 12m asl
White Meadows
19 May 2022 21:44:46
Heatwave Alert on the 12z gfs Op
🔥
White Meadows
20 May 2022 06:08:57
00z Op goes for the major warm up at the end again. 15c uppers
DEW
  • DEW
  • Advanced Member
20 May 2022 07:25:51

Today's temp summaries maintaining a 'layered' pattern of temps in W Europe from hot in Spain to cool in Scotland but futher east some very cold weather for the time of year coming S from the White Sea. Week 2 sees some warmth creep into S England while E Europe retains its cold pool. Rain fairly well distributed across Europe in week 1, resolving in week 2 into patches on the Atlantic (NW Scotland still damp), W Russia and over the Alps/Pyrenees. Driest in a strip along the W coasts of continental Europe.


Jet - a few bits of W-lies over Britain to start with and then more consistently from Wed 25th for a few days, mostly over Scotland. Not much to be seen after Mon 30th


GFS Op - pressure fairly high with mostly W-lies for the coming week, though a shallow trough briefly moves across Britain Mon/Tue 23rd/24th. HP develops Mon 30th 1025mb to cover Britain, and then slowly drifts N-wards to form a ridge Ireland - Norway with continental (warm, thundery?) LP affecting England


GEFS - for the S, a brief warming, cooler around Wed 25th before the mean steadily climbs to 3 or 4 C above norm Sun 5th (at that stage very fe ens members below norm though disagreement in the lead-up). In the N, the cooler period extends a few days beyond the 24th but does also warm up later.  Today's rain is SE only, most of Britain gets some on the 24th though v little in SW, mostly dry generally after that but the NW continues wet throughout.


ECM - Like GFS to Sat 28th but the HP then develops more quickly and moves N-wards more quickly so by Mon 30th slack LP over Europe is combining with Lp S of Ireland


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

Chichester 12m asl
Hungry Tiger
20 May 2022 10:01:27

Heatwave Alert on the 12z gfs Op
🔥

Originally Posted by: White Meadows 


Hope so - I've just seen a temperature forecast for the last week of this month and it looks pretty miserable with 15s and 16s.


 


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


Taylor1740
20 May 2022 19:05:27
GFS seems to keep on showing crazy hot outliers in the op runs for the start of June.
NW Leeds - 150m amsl
Jiries
20 May 2022 20:20:30

GFS seems to keep on showing crazy hot outliers in the op runs for the start of June.

Originally Posted by: Taylor1740 


With no source of forecasting and models had been completely useless as remember they put this week warm mid 20's ? Only prove to see heat is right on the day you open the door to feel it on the spot.  Your other post referring 20C heatwave is true now days we are on Icelandic climate so any +20C is a big deal which it does in Iceland warm spells.

DEW
  • DEW
  • Advanced Member
21 May 2022 06:51:59

WX summary charts show some warmth in W Europe and coolth in E Europe week 1 re-arranging itself into a sharper boundary running continuously E-W  with warm, not to say hot, weather from S France to Hungary to S Russia, sharply distinguished from cooler weather to the north. Rain moves from its week 1 pattern with patches in N Sea (Norway,Scotland), Belarus, N Russia to a week 2 with a strip matching the temp boundary above.


Jet weakly across Britain now, stronger and mainly across Scotland for the end of next week. Then it revives from 1st June in a rather fragmentary fashion in the region from the Channel up to the Baltic.


GFS OP places LP between Scotland and Iceland this coming week, throwing a trough S-wards for Tue 24th (995 mb N Sea) before HP covers Britain 1025mb Sat 28th. This HP drifts N-wards allowing NE-lies for a while before slack LP over the continent shifts this direction to weak E-lies around Thu 2nd (maybe something thundery for England) and then finally LP organises itself off W Ireland Sun 5th to bring up warmth from the S for England but cooler SW-lies for Scotland


FAX and BBC show lower pressure across UK for Mon 23rd/Tue 24th, esp BBC which links it to LP over France


GEFS for the S - warm in the next few days, cooler around Wed 25th, then a little above norm for the next fortnight but the hot outliers referred to in previous posts have disappeared  (op & control quite cool at different times). Rain on 23rd/24th, then very little. In the N, similar but the cool spell lasts a day or two longer, and the rain is more general for the period around the 25th with more to be seen at the beginning of June


ECM like GFS but also tending to emphasise the trough on Mon/Tue


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

Chichester 12m asl
DEW
  • DEW
  • Advanced Member
22 May 2022 07:24:51

WX: As yesterday, warm or hot weather over S Europe is sharply distinguished from cooler weather to the north, with a line from Mid-France to the Black Sea dividing areas above/below average for the time of year. In week 2 the big change is that the really cold pool which has persisted over Russia is replaced by warmth coming up past the Caspian Sea; if anything, countries around the N Sea are a little cooler.


GFS Op: a broad trough drifting E-wards across UK early this week (Tue 24th, 995mb Netherlands, BBC shows something more active over N France too) before HP develops for the weekend 1030mb Hebrides Sun 29th, unfortunately too far W to prevent N/NE-lies affecting the E Coast. That pattern stays around until Tue 7th end-of-run, sometimes with the HP spreading across the UK (Wed 1st), sometimes menaced by LP approaching from Scandinavia (Sun 5th)


GEFS: a little cooler for a few days, then mean temp close to seasonal norm though the op is a cold outlier around the 5th esp for E districts. Some rain at first, esp in the SE and NW, small amounts sporadically later on


ECM: agrees with GFS


 


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

Chichester 12m asl
Bolty
22 May 2022 20:57:37

Looking at the way the models are going, it wouldn't surprise me if many places record a warmer a temperature for 1st January than the 1st June. New Year's Day this year was the warmest on record, so it's actually very do-able.



Scott
Blackrod, Lancashire (4 miles south of Chorley) at 156m asl.
My weather station 
moomin75
23 May 2022 06:33:08
Looks to me as though the other big models are now following GFS with northern blocking and much, much cooler.
Cudos to GFS if its right.
Witney, Oxfordshire
100m ASL
DEW
  • DEW
  • Advanced Member
23 May 2022 07:06:01

WX temps: the cold pool which has persisted over W Russia in week 1 finally disappears in week 2, but this does nothing for temps across N Europe which remain cool north of a line S France - Alps - N Ukraine, with a sharp temp gradient to the Med and Black Sea which are warm/hot. Rain patchy but mostly in the cool areas outlined above.


Jet not very strong but always something across Britain and N Europe; at the very end something much stronger heading for N Spain.


GFS Op - broad trough over Britain now rather more extensive than previously forecast, moving away to the north and giving a zonal flow from Thu 26th. HP over SW England Sat 28th but quickly moving N to Iceland with NE-lies for all by Mon 30th. After that, Britain tends to lie in a trough from an LP on the Atlantic off SW Ireland to one over Scandinavia, the trough sometimes more marked (Tue 31st, Fri 3rd, Tue 7th) and at other times in a col between the LP centres.


GEFS - In the S, cool 25th May, briefly milder, then a cool period lasting to Thu 2nd (op & control quite cold, 6 or 7 C below norm, other ens member milder), mean temp finishing close to norm for a while. Rain now esp in SE, dry for a time, small amounts from Thu 2nd. In the N, cross off 'briefly milder', otherwise temp profile similar; also rainfall but current rain affects Scotland rather than N England.


ECM - synoptics like GFS until Tue 31st when the HP over Iceland extends a ridge S-wards, just enough to hold off the LP on either side.


Daily Star model - 25C ten-day heatwave starting at the end of this week


 


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

Chichester 12m asl
Ally Pally Snowman
23 May 2022 07:11:09

Chart image


 


Despite the extensive Northern blocking nothing that cold yet. Not what  you want to see in late May though.


 


Bishop's Stortford 85m ASL.
NMA
  • NMA
  • Advanced Member
23 May 2022 07:15:24


WX temps: the cold pool which has persisted over W Russia in week 1 finally disappears in week 2, but this does nothing for temps across N Europe which remain cool north of a line S France - Alps - N Ukraine, with a sharp temp gradient to the Med and Black Sea which are warm/hot. Rain patchy but mostly in the cool areas outlined above.


Jet not very strong but always something across Britain and N Europe; at the very end something much stronger heading for N Spain.


GFS Op - broad trough over Britain now rather more extensive than previously forecast, moving away to the north and giving a zonal flow from Thu 26th. HP over SW England Sat 28th but quickly moving N to Iceland with NE-lies for all by Mon 30th. After that, Britain tends to lie in a trough from an LP on the Atlantic off SW Ireland to one over Scandinavia, the trough sometimes more marked (Tue 31st, Fri 3rd, Tue 7th) and at other times in a col between the LP centres.


GEFS - In the S, cool 25th May, briefly milder, then a cool period lasting to Thu 2nd (op & control quite cold, 6 or 7 C below norm, other ens member milder), mean temp finishing close to norm for a while. Rain now esp in SE, dry for a time, small amounts from Thu 2nd. In the N, cross off 'briefly milder', otherwise temp profile similar; also rainfall but current rain affects Scotland rather than N England.


ECM - synoptics like GFS until Tue 31st when the HP over Iceland extends a ridge S-wards, just enough to hold off the LP on either side.


Daily Star model - 25C ten-day heatwave starting at the end of this week 


 


Originally Posted by: DEW 


Thank you David for these updates.


The latter keeps getting shunted into the unpredictable future. A heatwave nowadays in Dorset seems to be the high teens. Have yet to see higher than 23C here IMBY Dorset.


https://www.dorsetecho.co.uk/news/20133351.weather-forecast-dorset-getting-hot-hot-hot/


 


Vale of the Great Dairies
South Dorset
Elevation 60m 197ft
Taylor1740
23 May 2022 08:25:22

Looks to me as though the other big models are now following GFS with northern blocking and much, much cooler.
Cudos to GFS if its right.

Originally Posted by: moomin75 


Agreed GFS often seems to lead the way at picking up the longer range trends. Not really seen any Northern blocking for a while but looks like it may emerge just in time for the beginning of Summer...


NW Leeds - 150m amsl
ozone_aurora
23 May 2022 09:01:25

Looks to me as though the other big models are now following GFS with northern blocking and much, much cooler, and miserable.
Cudos to GFS if its right.

Originally Posted by: moomin75 



Yup, just what I thought would happen. Good weather to be in the exam room.

I wish WC or EC football would be on.

moomin75
23 May 2022 09:58:04


 


Agreed GFS often seems to lead the way at picking up the longer range trends. Not really seen any Northern blocking for a while but looks like it may emerge just in time for the beginning of Summer...


Originally Posted by: Taylor1740 

Pretty much bang on cue more or less for thr first day of meteorological summer.


Couldn't make it up really!!


Witney, Oxfordshire
100m ASL
Ally Pally Snowman
23 May 2022 09:58:39

Cooler spell seems likely now from about 29th. Doesn't look that dramatic on the 850 charts but can imagine 2m temps could be very depressed with plenty of North sea gunk in a north easterly. We know in winter that northern blocking rarely materialises will we get a similar about face now? Let's hope so.



 


Bishop's Stortford 85m ASL.
idj20
23 May 2022 10:06:29


 


Agreed GFS often seems to lead the way at picking up the longer range trends. Not really seen any Northern blocking for a while but looks like it may emerge just in time for the beginning of Summer...


Originally Posted by: Taylor1740 



Yup, it is as I feared the other day. Shades of Summer 2012. Of course it is not all set in stone, as always the case with medium range forecasting.


Folkestone Harbour. 
moomin75
23 May 2022 10:32:58


Cooler spell seems likely now from about 29th. Doesn't look that dramatic on the 850 charts but can imagine 2m temps could be very depressed with plenty of North sea gunk in a north easterly. We know in winter that northern blocking rarely materialises will we get a similar about face now? Let's hope so.



 


Originally Posted by: Ally Pally Snowman 

You can bet your bottom dollar that the northern blocking will materialise exactly as shown, as sod's law kicks in.


Witney, Oxfordshire
100m ASL
Taylor1740
23 May 2022 12:42:45


Pretty much bang on cue more or less for thr first day of meteorological summer.


Couldn't make it up really!!


Originally Posted by: moomin75 


Yeah in the same way that any Northern blocking will magically disappear again on 1 December and zonality will return!! 


NW Leeds - 150m amsl
fairweather
23 May 2022 12:54:45


 


Agreed GFS often seems to lead the way at picking up the longer range trends. Not really seen any Northern blocking for a while but looks like it may emerge just in time for the beginning of Summer...


Originally Posted by: Taylor1740 


Well other than most of April !


S.Essex, 42m ASL

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