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Why does the United States consistently lead the world in the number of tornadoes each year?

9 days ago   |   By

Dear Tom,
Why does the United States consistently lead the world in the number of tornadoes each year?
- Mick Bulakowski, Palatine
Dear Mike,
The unique geography of the central U.S. that provides a barrier-free collision course between polar, tropical and desert air masses makes this nation home to about 75 percent of the world's tornadoes. Tornado expert Tom Grazulis speculates that tornadoes have occurred in almost every nation of the world, with the exception of the polar regions. Significant tornado activity occurs each year in Europe, Australia, Canada, Russia, Argentina, China and...
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