FUJITA SCALE (or F Scale) - 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.

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