Rating | 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, devestating damage |
F5 (violent) | 260-318 mph (rare), incredible damage |
Sky Condition | Cloud Coverage |
Clear / Sunny | 0/8 |
Mostly Clear / Mostly Sunny | 1/8 to 2/8 |
Partly Cloudy / Partly Sunny | 3/8 to 4/8 |
Mostly Cloudy / Considerable Cloudiness | 5/8 to 7/8 |
Cloudy | 8/8 |
Fair (mainly for night) | Less than 4/10 opaque clouds, no precipitation, no extremes of visibility/temperature/wind |
Class | Intensity (in Watts/m2) |
B | I < 10-6 |
C | 10-6 <= I < 10-5 |
M | 10-5 <= I < 10-4 |
X | I >= 10-4 |
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