kold weather

Personal weather stations around Heathrow back on the way up, several have leapt up nearly 1c in the last 20-30 minutes,a similar rise for the official station would put us within touchig distance of the record at this point. Probably 45-60 minutes of warming left before we level out and cloud increases again from the south, especially for London based stations.

I think someone calculated that as of 2pm the record was already tied, and since then its only gone upwards a little further. Could get close to 34 once all is done.

I'd say between now and 4.30pm is going to be the do or die time, nice clearances for Cambridge and only a moderate level of mid-high cloud for Sw/W London over the next 90 minutes means I think there is still a good shot at the record going. Tight run thing though for sure. Need just 1c extra (0.9c for Kew/Writtle), though Writtle may fall away as the cloud cover increases as showers move in.

Offical highest temperature today at the moment of 37.7C in Kew and Writtle. However I suspect both Heathrow and Cambridge will warm this hour as the cloud cover for both areas looks lower than it was for the previous hour.

Yeah there is enough time, temperatures can rebound very rapidly from showers with the atmoshpere this hot. IF Heathrow hasn't recovered at least to some extent by the next recording, then we may have to concede its out of the race, but still there for the moment. Cambridge and surrounding region clearly also very much in the game.

I wouldn't be shocked if they are holding back on announcing any record, simply due to quality checks, etc. Still we will see, as you say many stations above 38c in that region now.

Not surprising, given the convective line was basically right on top of it at 2.50pm, of course with extra cloud cover and rain nearby it was going to be dropping...I'm impressed it hasn't dropped more, Gatwick dropped 3c during that band for example! Suspect the 3.20pm will be back upto 37c, then the run for 38.5 really begins as it enters an area of somewhat less cloud cover pushing into Surrey at the moment. In the sunnier slot and temperatures now at the highest point all day, just a little north of 35.

Quite a large gap now opening up between the line of showers over London and to the SW of it, as this area of lower cloud cover (though NOT 100% clear for sure!) I think we will probably have another run at the record over the next 90 minutes or so in W London providing nothing unexpected bubbles up. If it doesn't break by then, then I suspect we will be out of luck.

Not really, but it will only need a moderate bump in the warming to allow it to get above the 38.5c temperature record. Same goes for Cambridge, especially now the showers have cleared off to the north.They will have a 2hr window roughly of decent sunshine which may do the job.

I'd say we are down to 2/8th from around 4/8th 30 minutes ago, sun coming through bice and strong with little cloud to the SW/S at the moment. This air I have should end up in the Heathrow region around 3.15-3.30pm roughly and I suspect is going to give another round of warming for W.London once it does.

I think we will see some slight cooling over thenext 30-45 minutes in W.London as the next cell rolls through, but skies looks somewhat clearer again behind it, so I suspect probably a final record attempt for that region as there is relatively minor cloud cover to contend with between 3.15-4.30pm. If its not gone by tht time, probably game over. Cambridge still in with a real shot as well, though doesn't appear that anywhere is above 37.4 based on reports thus far...

Cloud cover likely holding back temps in the hottest parts of London now, but behind that the cloud does decrease again, and indeed my temperatures increased again. Likely going to have another shot at the all time record for the W.London area between 3-4pm I suspect, probably the last shot.

35c still here and probably I suspect close to max, probably going to dance about within a range of 33-35c dependent on cloud cover. Cracking heat though for sure out there! Also I suspect Heathrow will probably only slowly increase from now due to the increasing cloud cover from the next round of showers.

Heathrow region has plenty of local personal weather stations in the 99-101f range now, those figures are pretty believable and match what the offical airport reported earlier in the day. Would suggest Heathrow currently somewhere close to 38c now. Cloud levels should be increasing in London now though, but luckily the strongest returns from the showers are to the east of W.London at the moment so may not be a fatal spell of cloud cover.

Upto 35c in Liphook, but there is more and more mid level cloud coming in as expected from the showers, so got to be getting close to the peak. Close to the all time record now, just 1.7c needed (probably an hour of good sunshine needed at most). I suspect one of those stations in the 36 range will break the record.

NEW record for July at Heathrow, suspect Cambridge is literally just a smidge behind as well. Going to be a close call as to whether we get past 38.5c before the showers move into the area along with the higher level of cloud cover. I still suspect a low 39c is the most likely outcome. Also impressive round of showers have developed near Luton, probably along the line of the previous showers.

EVen if it is 36.5, the July record is literally within touching distance and will 100% fall, and its just 2c shy with still likely 2-3hrs of solid sunshine likely in that region.

Suspect the July record is probably just minutes from falling, as the min it must by 36.5c for it to be rounded to 37c and that was recorded at 1.20pm, All time record probably quite readily do able for Cambridge now...as it is for W.London hotspots. Plenty of 35.5-36.5c temps being recorded around the Heathrow area as well at the moment, so Heathrow probably mighty close to the record as well now for July.

In that clear slot my temperatures rose by nearly 3c. If the same thing happens for Heathrow, they will end up around 39c before the clouds come over. Cloud cover increasing to the south now due to those showers, but still reached 34.5c, a little over what was expected at this point.

Also upto 34.5c now, which is a 3C increase from when the cloud cover lifted up about an hour ago. So I'd suggest if you include a similar rise for Heathrow before the cloud cover increases. Plenty of high 34s and 35s out there at the moment.

Well three stations are at 35.9C (the obvious 3!) so plenty of chances still to break the all time record as well in any one of those places. Suspect multiple places will be breaking the July record within the next 30-45 minutes.

Cloud looks a little thicker this time coming in from the south, suspect these cells aren't going to die now like the previous ones did. Will probably enter London region around 2.30 ish which will probably make London's max around that time as well. Afterwards attention I suspect starts to focus further north. Also a slightly more obvious NNE motion now to the showers than earlier, which may spare the Heathrow area the worst of it.

Yeah, our temperatures here dropped about 2-3f for a brief time, but have since risen by about 6f (now upto 33.5C). cloud deck should ease off pretty soon as MwB has said for Heathrow and we will likely see another sharp kick up. Remember, Heathrow dropped to 31C for several hours between 11-1pm in 2015 and still ended up at 36c!

No reason why Cambridge can't get as high as say Heathrow, they are under more or less the same depth of hot airmass, so in theory they should be able to reach similar levels, and no reason why if Heathrow can go +38c today, then Cambridge can as well given the set-up within 50 miles really isn;t that much different in a north-south aligned flow (so UHI heat is overspilling northwards so to speak). I wouldn't be shocked if the July record already has gone in the last hour, or is very close to going.

That cloud shouldn't last long at all, its the left over from the decayed showers that came up from the channel, will go back to clear skies soon enough (like 15-20 mins I'd guess based on what happened here, I can see it trundle off to the north of here still.