Heathrow reporting 29C. Wouldn’t be surprised if temperatures were still rising in some locations due to the late break up of cloud.

Yes LHR has risen by 2.3 degrees between 3pm and 4pm. The hot air is arriving - currently about 13-14C at 850mb over London, in another 12 hours it will be 18C.

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Heathrow reporting 29C. Wouldn’t be surprised if temperatures were still rising in some locations due to the late break up of cloud.

MetO automated has (and has had all day) Heathrow's max between 5 and 6 this afternoon/evening.

As for weather stations in Kent, having come into a lot of Amazon vouchers (converting hotel points into vouchers rather than Avios this time around) I'm seriously tempted to buy one of those pro Davis stations, with a fan for the thermometer... that should give more accurate readings than my Oregon which, sadly, always overreads when it's in direct sunshine.

I'll have a ponder over the weekend!

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May be worth renaming this thread to reflect the upcoming and potentially exceptional heatwave?

May be worth renaming this thread to reflect the upcoming and potentially exceptional heatwave?

Yes maybe something like Record Temperature Watch - August 2020.

Mods?

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Yes LHR has risen by 2.3 degrees between 3pm and 4pm. The hot air is arriving - currently about 13-14C at 850mb over London, in another 12 hours it will be 18C.

 

Sleep well, guys!

 

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12Z Arome seems to have knocked about 2C off tomorrows temps. - edit, no it hasn't!

12Z Arpege looking marginally hotter on Saturday than Friday now - 36C max on both days but there are more 36C gridpoints on Saturday.

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12Z Arome seems to have knocked about 2C off tomorrows temps.

12Z Arpege looking marginally hotter on Saturday than Friday now - 36C max on both days but there are more 36C gridpoints on Saturday.

Whereas GFS has added one on to tomorrow - now 34C.

But when I look at Arome it seems to show 36C in central London, 37 and 38C in West London?

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Whereas GFS has added one on to tomorrow - now 34C.

But when I look at Arome it seems to show 36C in central London, 37 and 38C in West London?

Yes, arome hasn't updated for me yet - Currently only at 6am tomorrow AM.

 

 

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Ignore that - Arome was cooler up to 11am but it's now updated to 3pm and looks warmer if anything.

https://www.meteociel.fr/modeles/aromezoom.php?mode=41&x=4858.21&y=2512.98&ech=26&zoom=4 

Lots of 36 and a ring of 38 at Heathrow.

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Looks like the latest runs have upgraded the heat up this way too. GFS going for 31/32C in Manchester on Wednesday next week, so you can call that 33/34C.

Looking forward to this!

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Looking at the latest Met Office output for Heathrow, it has 36, 36, 35, 35, 35, 33.

Have we ever had five consecutive 35C days in the UK? I strongly suspect we haven't even had four.

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Looking at the latest Met Office output for Heathrow, it has 36, 36, 35, 35, 35, 33.

Have we ever had five consecutive 35C days in the UK? I strongly suspect we haven't even had four.

I don't think we have. You have to say this might warrant a Level 4 Heatwave warning for the SE or at least London

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Ignore that - Arome was cooler up to 11am but it's now updated to 3pm and looks warmer if anything.

https://www.meteociel.fr/modeles/aromezoom.php?mode=41&x=4858.21&y=2512.98&ech=26&zoom=4

Lots of 36 and a ring of 38 at Heathrow.

I can see 37 there, but not 38... still very hot though!

It's also modelling something interesting here. 27C at 3 PM, then shooting up to 34 by 6 PM as the wind veers. That's a lot of detail to pack in and I'll be interested to see if it's right.

 

 

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Looking at 1976 there were five 35C days in total, but not consecutive (June 26, 27, 28, then July 2 and 3).

August 1990 also had three consecutive 35C+ days (August 2, 3, 4).

August 2003 only managed two consecutive days (Aug 9 and 10, and it was also reached on Aug 6).

In fact before 1976 35C had only been reached 7 times in total all century!

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Looking at the latest Met Office output for Heathrow, it has 36, 36, 35, 35, 35, 33.

Have we ever had five consecutive 35C days in the UK? I strongly suspect we haven't even had four.

We have had five - in 1976!

From the excellent Trevor Harley:

The summer of 1976 was exceptional in containing 5 consecutive days above 35C.

https://www.trevorharley.com/hottest-day-of-each-year-from-1900.html

Interesting though that the max was "just" 35.9C... 

36C or more has been seen in 7 years  (1911, 1932, 1990, 2003, 2006, 2015, 2019)

(And 2020, of course, but he's not updated that bit yet!)

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Looks like the latest runs have upgraded the heat up this way too. GFS going for 31/32C in Manchester on Wednesday next week, so you can call that 33/34C.

Looking forward to this!

Indeed. But more importantly I have next week off work. My last holiday was essentially the first two weeks of July and I fell flat on my face with that one, utterly abysmal. This time the hand of weather fate could be dealing me an absolute stunner.

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Looking at the latest Met Office output for Heathrow, it has 36, 36, 35, 35, 35, 33.

Have we ever had five consecutive 35C days in the UK? I strongly suspect we haven't even had four.

If that turns out to be right, this could be one of the most intense heat waves in UK weather history! It would be incredible if it saw us, not only break the all-time record, but see 40C recorded!

If that happened it would make the August 2003 and even more so the August 1990 heat waves look puny by comparison.

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I am looking at the excellent site weather.us

Arome has a very clear 38C shown.

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Looks like the latest runs have upgraded the heat up this way too. GFS going for 31/32C in Manchester on Wednesday next week, so you can call that 33/34C.

Looking forward to this!

With lot of clouds today might be a problem tomorrow because last week we got 34C in Nuneaton east of Birmingham and was supported from near sunny day on Thursday 30th July and 27C.  If was sunny today and 27C as foretasted then 34-35C possible here tomorrow.

11th / 12th look very very hot on that 06z amazing agreement imo very close 40c after days of +30c

http://www.meteociel.fr/modeles/gefs_table.php?x=0&y=0&lat=51.5085&lon=-0.12574&run=6&ext=fr&mode=7&sort=0

look at the burning s/e slack flow amazing stuff 

http://www.meteociel.fr/cartes_obs/gens_panel.php?modele=0&mode=1&ech=138