Very hot till 2pm when we had a fantastic thunderstorm. It was preceded in classic fashion by cold gusts and passed right over the campus. Went upstairs to watch from a corridor window - many forks, branches and sheets of lightning. Then the rain started and the thunder got positively apocalyptic - great ripping cracks and explosions. By 3pm the sun was out and it was cooler.

Definitely the best storm since that one I waited all one long summer day for back in Mugsborough. (Ha, I see that was also Friday, June 24th).

There've been many fruitless waits in my career as a thunder fan, but one sign never disappoints: the pre-storm cold gusts. If you get those, you're in for a show.

Btw, realised why June 24th is called Midsummer Eve: June 25th is one of the quarter days.