Why We Urge Sheltering on the Lowest Floor

Due to friction with the ground, wind speeds are lowest near the ground and increase with height. In tornadoes, the basement is best. If you don't have a basement, go to a bath or closet in the middle of the home on the lowest floor.

In hurricanes, a basement is not as certain due to the possibility of flooding. It is probably better to shelter in the middle of the house and definitely away from windows.