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Learn More
In Learn More the National Geographic magazine team shares some of its best sources and other information to expand your knowledge of our featured subjects. Special thanks to the Research Division.

Related Links

Tornado Project Online
This commercial website is a great source for tornado lore and links. Its section on safety in a variety of circumstances is one of the best on the Internet.

Online Tornado FAQ
Roger Edwards, with the National Weather Service's Storm Prediction Center, has assembled an outstanding site that covers everything about tornadoes, from how they form to current research in the field. He has included dozens of embedded links.

The National Oceanic and Atmospheric Administration's tornado page has links to several safety guides, tornado statistics, and a page that lets you check the probability of a tornado occurring near where you live. Included are links to the Storm Prediction Center and the National Severe Storms Laboratory.

National Geographic Committee for Research and Exploration
Tim Samaras's work was funded in part by National Geographic's Research, Conservation and Exploration Group.


Bluestein, Howard. B. Tornado Alley: Monster Storms of the Great Plains. Oxford University Press, 1999.

Grazulis, Thomas P. The Tornado: Nature's Ultimate Windstorm. University of Oklahoma Press, 2001.

NGS Resources

Peter, Carsten. "Blown Away." National Geographic (April 2004), 2-35.

Appenzeller, Tim, and Dennis Dimick. "Signs From Earth: Heating Up… Melting Down…" National Geographic (September 2004), 2-11.

Glick, Daniel. "GeoSigns: The Big Thaw." National Geographic (September 2004), 12-33.

Montaigne, Fen. "EcoSigns: No Room to Run." National Geographic (September 2004), 34-55.

Morell, Virginia. "TimeSigns: Now What?" National Geographic (September 2004), 56-75.

Suplee, Curt. "The Sun: Living With a Stormy Star." National Geographic (July 2004), 2-33.

Vesilind, Priit J. "The Hard Science, Dumb Luck, and Cowboy Nerve of Chasing Tornadoes." National Geographic (April 2004), 2-37.

Phelan, Glen. Extreme Weather. National Geographic Books, 2004.

Bliss, Pamela. Introduction to Weather. National Geographic Books, 2004.

Johnson, Rebecca. Weather and Climate. National Geographic Books, 2003.

Collins, Andrew. Storms. National Geographic Books, 2002.

Bradbury, Ray. "The Beautiful Bad Weather." National Geographic Traveler (May/June 2000), 98-101.

Miller, Peter. "Tornado!" National Geographic (June 1987), 690-715.