Further Reading

A. Bridges. “Twister science.” Science News for Kids. Dec. 9, 2012.

R. Edwards. “Tornado preparedness tips for school administrators.” National Oceanic and Atmospheric Administration Storm Prediction Center, Norman, Okla.

J. Raloff. “Extremely bad weather.” Science News. Vol. 182, Nov. 17, 2012, p. 22.

National Severe Storms Laboratory. “Severe Weather 101: Tornado Basics.”

National Climatic Data Center. U.S. Tornado Climatology. National Oceanic and Atmospheric Administration.