Roger, if it is any comfort we've been having rain like that in the UK this week, and apparently today a bit further south from here some pretty spectacular thunder storms, see
http://news.bbc.co.uk/1/hi/in_pictures/7546933.stm
I like the fact the video recording kept going even while the organ was being hastily covered up (neat roof), and that the 'recording engineer' found shelter with the organ. And it sounds pretty good, it just needs that proscenium (my pencil hand is itching to draw it but maybe you've already got a design).
Cheers
Anna