thunder, Rain, and stupid lights

A few things going on right now, i'm part of a running crew for a school play and there has been a few thunder storms, I love thunder storms. They are, however a pain when your a few feet away from a gym roof, as i was in a previous rehersal for they play when i was operating lights, Both heavy rain andthunder can be LOUD!!! I had no idea how hard it could be to hear what was going on on stage, needless to say i missed a few cues, and some scenes went in total darkness, good thing it was only a rehersal.