What are the natural disasters that threaten the U.S.? Every year we go through a series of phenomenon that take lives and damage property. You can see references to these disasters in popular culture, but they really could happen. What scares you the most? Is it something caused by nature or mankind? War or some industrial mishap can happen, but the natural events listed here are guaranteed. Will it happen by wind? lightning? water? or a rock from outer space? Let us know what you think.