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10 terrifying twisters

By: Laura Moss on July 30, 2010, 12:05 p.m.
tornado touches down in Foss Lake, Oklahoma on dam

Photo: John W. Cannon, Elk City Daily News/AP

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Foss Lake, Oklahoma

A vehicle drives across the top of Foss Lake dam with a funnel cloud not far behind on March 8, 2010, in Foss Lake in Oklahoma.