Beaufort | Knopen | m/sec | kenmerken |
0 | 0 | 0-0.2 | stilte |
1 | 2 | 0.3-1.5 | flauw en stil |
2 | 5 | 1.6-3.3 | flauwe koelte |
3 | 9 | 3.4-5.5 | lichte koelte |
4 | 13 | 5.6-8.0 | matige bries |
5 | 18 | 8.1-10.8 | frisse bries |
6 | 24 | 10.9-13.8 | stijve bries |
7 | 30 | 13.9-17.2 | harde wind |
8 | 37 | 17.3-20.8 | stormachtig |
9 | 44 | 20.9-24.5 | storm |
10 | 52 | 24.5-28.9 | zware storm |
11 | 60 | 29.0-32.8 | orkaanachtige storm |
12 | >60 | >33 | orkaan |