The area of the US that is prone to tornados is huge, all the way from the Rockies to the East Coast. There are a few areas that are even more prone to tornados, including Tornado Alley and Dixie Alley, but that's still a huge area. The chance of being impacted directly by a tornado is incredibly small, and most people live their entire lives without being hit by one. Of course, if you do get hit by one, it's absolutely devastating.