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WIND SPEED CONVERSION

MPH M/S KPH         MPH M/S KPH
1 0.4 1.6   26 11.6 41.8
2 0.9 3.2   27 12.1 43.5
3 1.3 4.8   28 12.5 45.1
4 1.8 6.4   29 13 46.7
5 2.2 8   30 13.4 48.3
6 2.7 9.7   31 13.9 49.9
7 3.1 11.3   32 14.3 51.5
8 3.6 12.9   33 14.8 53.1
9 4 14.5   34 15.2 54.7
10 4.5 16.1   35 15.6 56.3
11 4.9 17.7   36 16.1 57.9
12 5.4 19.3   37 16.5 59.5
13 5.8 20.9   38 17  61.2
14 6.3 22.5   39 17.4 62.8
15 6.7 24.1   40 17.9 64.4
16 7.2 25.7   41 18.3 66
17 7.6 27.4   42 18.8 67.6
18 8 29   43 19.2 69.2
19 8.5 30.6   44 19.7 70.8
20 8.9 32.2   45 20.1 72.4
21 9.4 33.8   46 20.6 74
22 9.8 35.4   47 21 75.6
23 10.3 37   48 21.5 77.2
24 10.7 38.6   49 21.9 78.9
25 11.2 40.2   50 22.4 80

BEAUFORT WIND SCALE

m/s force  
0 0 Calm, smoke rises vertically
1 1 Light air, direction of wind shown by smoke drift
2-3 2 Light breeze, wind felt on face, leaves rustle
4-5 3 Gentle breeze, leaves and small twigs in constant motion, wind extends light flag
6-8 4 Moderate breeze, raises dust and loose paper, small branches are moved
9-11 5 Fresh breeze, small trees in leaf begin to sway, cresting wavelets form on inland waters
11-14 6 Strong breeze, large branches in motion, whistling heard in telegraph wires, umbrellas used with difficulty
14-17 7 Near gale, whole trees in motion, inconvenience felt when walking against the wind
17-20 8 Gale, breaks twigs off trees, generally impedes progress
21-24 9 Severe gale, slight structural damage occurs
25+ 10 Storm, seldom experienced inland, trees uprooted, considerable structural damage occurs

AVERAGE WIND SPEEDS AT WEATHER STATIONS

South Australia

in Metres per Second

Ceduna 5.20
Pt Lincoln 4.77
Wudinna 4.49
Woomera 5.05
Whyalla 4.10
Pt Augusta 4.24
Stansbury 5.79
Renmark 1.8
Adelaide 5.17
Victor Harbor 5.43
Murray Bridge 5.26
Mt Gambier 5.18
 

Victoria

in Metres per Second

Portland 5.75
Hamilton 4.69
Warmambool 4.06
Horsham 5.83
Mildura 4.14
Swan Hill 3.82
Bendigo 3.03
Ballarat 3.78
Geelong 4.70
Laverton 4.51
Wonthaggi 4.15
Mt Hotham 5.83
Albury 3.18
Sale 3.68
Bairnsdale 3.83
Bombala 4.29