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10 terrifying twisters

By: Laura Moss on July 30, 2010, 12:05 p.m.
tornado hits Gilcrest and Windsor, Colorado

Photo: Brian Hanson, Rocky Mounain News/AP

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Windsor, Colorado

A funnel cloud is seen approaching Windsor, Colo., on May 22, 2008. The funnel cloud, accompanied by golf ball-sized hail, blackened the skies over Windsor as it knocked down power lines, shredded crops and tore through neighborhoods. The tornado killed one person and damaged many homes and businesses.