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NOVA - Season 31 Episode 15

NOVA - Season 31 Episode 15 - Documentary TV Shows 55:14. story about Scientists, meteorologists and storm chasers try to uncover the secrets of F5 tornadoes, the largest, most powerful and most dangerous on Earth. Included are looks at how funnels form and the devastating 2003 tornado in Moore, Oklahoma, plus "tornado tourists," who pay companies to take them to the ferocious phenomena to see them first-hand.

Released: Mar 03, 1974

Runtime: 55:14

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Networks: PBS


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