Natural disasters

My son and I were discussing the hurricane, and why some of those people might want to move to Montana. We decided despite the cold winters, hot summers, constant wind etc. Montana is really a pretty safe place to live. About the worst we could come up with was wildfires, and despite living here for almost 33 years I have only been in danger from them once. (I was about 9 at the time and my parents didn't seem to think we were really in that much danger.) Where else in the U.S could people possible be safer?