It's one thing to ride in heavy rain even windy with storms forecast all day. But you don't want to mess around with severe thunderstorms and especially with a dericho setting up. I'd give it a pass, or at least watch the radar like a hawk and take no chance at all of being out in that kind of wind.

I trailed after a small but vicious cell on my commute last friday, forest trail. If anyone had been riding in one particular one mile stretch during the 10 or 15 minutes when it went through, I do not think they would have survived. It can get really bad, really fast.