Beaufort Wind Scale

A chart detailing the Beaufort Wind Scale.
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The Beaufort Wind Scale was designed in 1805 by Sir Francis Beaufort, a rear admiral in the British navy, to describe the wind's effect on sailing ships. The scale is a series of numbers from 0 to 17 that indicate wind speed.

Number Name Miles Per Hour
0 Calm less than 1
1 Light air 1-3
2 Light breeze 4-7
3 Gentle breeze 8-12
4 Moderate breeze 13-18
5 Fresh breeze 19-24
6 Strong breeze 25-31
7 Moderate gale 32-38
8 Fresh gale 39-46
9 Strong gale 47-54
10 Whole gale 55-63
11 Storm 64-73
12-17 Hurricane 74 and above
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