Why We Urge Sheltering on the Lowest Floor

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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. 

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