0

Calm

0 - 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

Near gale

32 - 38

8

Gale

39 - 46

9

Strong gale

47 - 54

10

Storm

55 - 63

11

Violent storm

64 - 73

12

Hurricane

over 73