Beaufort Scale | Help

Please see below a beaufort scale for knots, meter per sec and kilometer per hour.

Beaufort Wind speed in kn Wind speed in m/s Wind speed in km/h
0 less than 1 0 - 0,2 0 - 1
1 1 - 3 0,3 - 1,5 2 - 5
2 4 - 6 1,6 - 3,3 6 - 11
3 7 - 10 3,4 - 5,4 12 - 19
4 11 - 16 5,5 - 7,9 20 - 28
5 17 - 21 8,0 - 10,7 29 - 38
6 22 - 27 10,8 - 13,8 39 - 49
7 28 - 33 13,9 - 17,1 50 - 61
8 34 - 40 17,2 - 20,7 62 - 74
9 41 - 47 20,8 - 24,4 75 - 88
10 48 - 55 24,5 - 28,4 89 - 102
11 56 - 63 28,5 - 32,6 103 - 117
12 more than 64 more than 32,7 more than 118

Saffir–Simpson Hurricane Wind Scale (SSHWS)

This scale is used in different regions to define strengths of a cyclone. A cyclone is called differently by region. The minimum intensity to be defined as a cyclone is 64 knots or 119 km/h of wind.

Category Wind speed in kn Wind speed in m/s Wind speed in km/h
Tropical Depression < 34 < 17 < 62
Tropical Storm 34-63 18-32 63-118
1 64-82 33-42 119-153
2 83-95 43-49 154-177
3 96-112 50-58 178-208
4 113-136 59-70 209-251
5 ≥ 137 ≥ 70 ≥ 252