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F - Rating |
Wind Speeds |
Description of Damage |
| F0 | 40-72 mph | Some damage to chimneys and signs, shallow rooted trees pushed over. |
| F1 | 73-112 mph | Surfaces peeled off roofs, mobile homes overturned, autos pushed off roads. |
| F2 | 113-157 mph | Roofs torn from frame houses, mobile homes demolished, large trees uprooted. |
| F3 | 158-206 mph | Roofs and walls torn off well-built houses, trains overturned, most trees uprooted, heavy cars lifted and thrown. |
| F4 | 207-260 mph | Well built houses leveled, structures with weak foundations blown some distance, cars thrown and large missiles of debris generated. |
| F5 | 261-318 mph | Strong frame houses lifted off foundations and disintegrated and debris carried considerable distances, automobile sized missiles fly through the air in excess of 300 feet, trees debarked. |
