#9: Hurricane Katrina
Did you know that, on average, there are about 10 hurricanes in the Atlantic every year? Fortunately, not all of them become major storms, and not all of them hit populated areas. But every now and then, a major one hits a populated area, and the resulting damage can be devastating.
One that still looms large in American memory, despite happening nearly 20 years ago, is Hurricane Katrina. The storm hit the southern US, namely in the area of New Orleans, in 2005, and an estimated 1,836 people died. It was a very dark moment in U.S. history.