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You are doing well, but suddenly you hear a siren (also known as an air-raid or tornado siren) Try not to panic! Tornadoes can last from several seconds to more than an hour. However, most tornadoes last less than _______ .

Fact Lab

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Interesting fact:

A waterspout is a tornado that is over a body of water and are very common in the Florida Keys. The deadliest tornado in the world's history occurred outside of the United States in Bangladesh on April 26th, 1989.