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yellowstone national park

  1. Hannah.Taylor

    The Yellowstone National Park F-4 Tornado

    I'm surprised that no one here has posted this. On July 21, 1987 a tornado touched down 45 miles northeast of Jackson, WY. The tornado crossed large elevation gradients and crossed the Continental Divide at well over 10,000 feet! To date this is the highest elevation a violent tornado...
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