Not many isobars on the map and the projected 4mph did not materialise in a consistent direction for more than a few minutes during the time we were on Blackheath today.

Mostly it was a shifting 1mph perceptible only as a directional cooling effect in the warming sunshine.

It was occasionally possible to get the Zen/CR1 to the top of the window and hang on the rising air but the cumulus effect only became fully evident later in the day.

I am looking forward to hearing reports from Spain next weekend. Sorry not to be there in person...

Felix