Our very first outing in our first motorhome was to a site near Alicante to try everything out and after extending the awning, having a nice "tapas" supper, I took the awning in and went to bed. That night a flash storm blew up, and in the morning the devastation was obvious with broken awnings, ripped safari rooms but boy, was I glad I took the awning in, and indeed learned a valuable lesson for the future!
Today here in Spain it is blowing a hooooley and we are warned of 80km gusts, but it is sunny and warmish. The weather seems to have changed over the years with many more odd occurrences, and plenty of "flash" happenings.
Incidentally, we lost the bathroom window in the Flair en route last year. It hadn't been secured properly and a passing lorry's vacuum sucked it out and ripped it off. Still waiting for the insurance to pay, but at over €600 and having to be supplied from Niesmann, another expensive lesson. I also have a checklist with "doors and windows closed" but on this occasion, the window was missed!