1. Most powerful tornado on record, with wind speeds exceeding 300 mph, Greenfield, Iowa tornado

    Most powerful tornado on record, with wind speeds exceeding 300 mph, Greenfield, Iowa tornado

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  2. Twisting Fury: The Science Behind the EF-4 Tornado That Ravaged Iowa

    Twisting Fury: The Science Behind the EF-4 Tornado That Ravaged Iowa

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  3. Funeral for couple killed in tornado held in same church as their wedding

    Funeral for couple killed in tornado held in same church as their wedding

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