That's another record to go.

Daily CET max record is 34.1C from 25/7/19.

Daily CET maximin record is 18.8C from both 29/7/48 and 11/8/97

Daily CET mean record is 25.2C from both 29/7/48 and 25/7/19.

(figures from Wikipedia so don't rely on them as gospel)

Some or all of those must be under threat from this spell.

Last night was horrendous. 2 year old was up multiple times and then 6 year old woke up at 6am and threw up. Now I've got a headache. Not good!

It's hot very early this morning. Already pushing towards 32C. Quite a lot of hazy cloud around though and the satellite shows a lot more pushing up through Wales.

That's not right. I'm not sure where you're getting your max values because they were also too low for ICON. Arome is showing 39C even on a very thinned (30:1) grid this morning. 

Sorry to hear that. 

Amazingly hot here already. Now 33C 

The BBC were forecasting 41c or 42c for Lincolnshire area northwards for today. But it needs to be remembered this is potential heat, not a given, requiring lots of things to come together to achieve such extraordinary values.

I sort of feel the forecasters are on a hiding to nothing in these scenarios: underestimate the temps and they will lambasted by the media (especially the tabloid end) and overestimate temps and they get accused of scaremongering or worse from GW sceptics.

Sunny!

34.8c

No cloud to speak of here, and I am a good 35 miles SW of London. A few contrails and wispy bits of cirrus but that is all.

35C here at 9.55am. This is insane. 5C hotter than same time yesterday when max was 38.5C. At this rate of increase it will hit 40C by noon.

 North Cambs has gone a bit hazy now. Really crystal clear until about 30 mins ago. 

30.0c achieved bang on 10am here.

21 in Truro, cloudy, rain easing off and still some lightning around. Feeling very fresh compared to yesterday so far.

We managed to keep our one year old granddaughter cool splashing in a little pool and keeping her in wet clothes. She was occasionally grumpy and clingy but when she went home her mum reported two new teeth had come through.  Only Eden could choose such heat to be teething!  They put an air con unit in her room last night and she settled OK.  

The cool air (or less hot air) has arrived here. At 8:45 it was 29.7C which I thought might be a false reading as it was so high, that was until I read this thread. However, the wind speed suddenly increased and now the temperature is a pleasant 25.2C.

I've been getting the Arome numbers from meteologix as it has the highest resolution for London (e.g. I can see what the grid square for my bit of Lewisham is), and Medway where the other likely hotspot in the SE is, but admittedly less resolution for Lincs, Yorks etc.

A real shame to lose the 40+ figures though right on the eve of the event.  

 Quite a few 34s at 10am

The weather doesn't take any notice of the models (although Arome was spookily accurate in 2019, as it had a tiny 39C circle right over Cambridge!).

34.1C at Heathrow now, and Cambridge airport also 34.

Fluctuating here around 33c. No noticeable rise for the past 30 mins

If we can be around the 37C mark by 12, I’d be very happy. If I’m being greedy a 38C would be wonderful. 

Heathrow showing 34.1C at 09 00

That is just crazy - easily going to hit 40C today somewhere