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Paul Huttner
St. Paul, Minn.

The science of tornadoes

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Tornadoes
Occasionally, a single storm will produce more than one tornado, either simultaneously or in succession. Multiple tornadoes produced by the same storm are referred to as a tornado family.
Photo by Bill Doms
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Tornadoes
Occasionally, a single storm will produce more than one tornado, either simultaneously or in succession. Multiple tornadoes produced by the same storm are referred to as a tornado family.
Photo by Bill Doms