I see no question of really hot weather continuing to the 27th with occassional severe wx..then it will change 27th, I too have been watching the 27th with interest given its the first weekend of my holiday, and all the charts , well aprt from UKMO have this mass of cooler/yellow,less orange air coming. I am intrigued as to what could happen to change that
I'm flying, prob aorund 25000 ft from Southampton to La Rochelle Thurs 25th, me thinks the pilot will have to navigate around some "big stuff"