gptkb:Dallas_Tornado
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rated on Fujita scale
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gptkb:Dawson_Tornado
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rated on the Enhanced Fujita scale
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gptkb:1993_Midwest_tornado_outbreak
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varied from EF0 to EF5
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gptkb:Tri-State_Tornado
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classified as a violent tornado
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gptkb:1999_Oklahoma_tornado_outbreak
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EF scale introduced after this event
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gptkb:Wichita_Falls_tornado_of_1979
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violent tornado
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gptkb:Joplin_Tornado
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violent tornado
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gptkb:Marshalltown_Tornado_of_1882
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rated on the Fujita scale
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gptkb:Moore_tornado_of_2003
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EF scale
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gptkb:Tornado_outbreak_of_1927
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enhanced understanding of tornado dynamics
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gptkb:Tornado_in_Tupelo,_Mississippi
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EF scale
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