Out here in Ca. (Sierra and Socal) we have thunderstorms with lightening. I have found and think it prudent to wait it out in as nonconducting location as possible. That is not under a large tree on a barren ridge top. It doesn't take to many big trees being struck near you to figure that out. We also have to be aware of flashflooding. Something to think about when pitching camp. Fortunately the rain usually passes and is mostly later in the day. Start early and you miss most of it.