Fujita Scale - WFMJ.com News weather sports for Youngstown-Warren Ohio

National Weather Service

Fujita Scale

Fujita Scale (or F Scale) is a scale of wind damage intensity in which wind speeds are inferred from an analysis of wind damage:

F0 (weak): 40- 72 mph, light damage.
F1 (weak): 73-112 mph, moderate damage.
F2 (strong): 113-157 mph, considerable damage.
F3 (strong): 158-206 mph, severe damage.
F4 (violent): 207-260 mph, devastating damage.
F5 (violent): 261-318 mph, (rare) incredible damage.

All tornadoes, and most other severe local windstorms, are assigned a single number from this scale according to the most intense damage caused by the storm.
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