As there is a hailstorm currently, I decided to go QRT on all bands and disconnect antennas and PSUs. I am probably being over-cautious, but I can go on 10m WSPR another day. In the last few hours it has just been locals and no DX on 10m WSPR.
UPDATE 1700z: See http://www.lightningmaps.org/realtime?lang=en. At the moment the maps show thunderstorms to the north of here. I may go on MF later.
UPDATE 1848z: As the nearest storm is in the Leicester area, I think it is safe to resume MF WSPR transmissions.