Hi, there was a  problem with the windspeed today 4th July 10 @ around 20:00 to 21:30 (topgear time) anyway the problem should be now corrected, this was due to the temp sensor, so will have to see if it happens again. the windspeed went up to 101mph,   hahahah, the max windspeed we had today was 49.9mph from what I remember.  sorry if you think your roof had blown off!   will keep an eye on the speed for a few hours.

Cheers
John