Fujita Damage Intensity Scale
(F0) Gale tornado (40-72 mph)
(F1) Moderate tornado (73-112 mph)
(F2) Significant tornado (113-157 mph)
(F3) Severe tornado (158-206 mph)
(F4) Devastating tornado (207-260)
(F5) Incredible tornado (261-318 mph)
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