I actually love thunder and lightening and rain like that, though I wouldn't want to be on a aluminum boat in the middle of a lake while that was happening, but a bike is ok. Most of the time I avoid riding if it's raining, but sometimes I get stuck in one while riding and it's actually fun as long as the temps don't drop a lot leaving me chilled. I will find cover if one's available, about two weeks ago I rode into a barn and waited it out, but the wind was what worried me the most not the rain and lightening. 40 to 50 mph side gusts while riding a busy highway can be a bit troublesome then add lack of visibility for drivers into the mix and you have a recipe for road kill.