Force no.

Average Speed MPH

Limits MPH

Description

1

2

1-3

Light Air

2

5

4-7

Light Breeze

3

10

8-12

Gentle Breeze

4

15

13-18

Moderate Breeze

5

21

19-24

Fresh Breeze

6

28

25-31

Strong Breeze

7

35

32-38

Moderate Gale

8

42

39-46

Fresh Gale

9

50

47-54

Strong Gale

10

59

55-63

Whole Gale

11

68

64-72

Storm

12

78

73-82

Hurricane

13

88

83-92

Hurricane