Ultimate Tornado

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Image: Cockrell Hill, Texas, and the path of a hypothetical F5 tornado

Ultimate Tornado

What makes some tornadoes more destructive than others? With expert testimony, stunning CGI, and the world's biggest tornado vortex machine, NGC explores the secrets of the deadliest twisters.

Ultimate Tornado , Ultimate Tornado , Find out the damage a tornado-hurled car can do.

Ultimate Tornado , Tornado Survivor Tells Her Story , In a monster tornado, one mother lives to tell her story.

Ultimate Tornado,Cockrell Hill, Tex., in the firing line of a hypothetical F5 tornado, as modeled by Scott Rae from the North Texas Council of Governments.

Ultimate Tornado,Chuck Doswell, meteorologist in Oklahoma City, Okla., where he retraced the tornado track of the devastating F5 twister that hit the city on May 3, 1999.

Ultimate Tornado,Harold Brooks, research meteorologist with NOAA.

Ultimate Tornado,LaDonna Peterson, a witness to the F5 tornado that hit Jarrell, Tex., on May 27, 1997, killing 27 people. LaDonna sheltered with her family in the bathroom of her mother-in-law's house. The house was demolished around them.

Ultimate Tornado,Chase Tower in Dallas, Tex. Dallas is in "tornado alley" and is overdue for a major tornado.

Image: Site of Donna Smithheisler and her demolished home

Ultimate Tornado,Donna Smithheisler, Anthony, Kans., on the site of her home that was demolished by an F4 tornado on May 12, 2004.

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