Wind.

Wind forces are logged according to the Beaufort scale, which is as follows:

No.Description. Mean velocity in
miles per hour.
0.Calm0
1.Light air1
2.Light breeze4
3.Gentle breeze9
4.Moderate breeze14
5.Fresh breeze20
6.Strong breeze26
7.Moderate gale33
8.Fresh gale42
9.Strong gale51
10.Whole gale62
11.Storm75
12.Hurricane92

INDEX