The wierdest thunderstorm I encountered was (by the way, I don't think it was raining and it didn't cause harm) the time I was using my computer. It was night and I was using my computer. Suddenly I saw a flash on the window and I closed my computer. The flash followed by thunder and it shook the ground like it was an earthquake, probably a 3 on the scale for earthquakes. There you go, wierd.