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Wind scales

Scales of several storm systems:
Saffir Simpson Hurrikan Scale / Taifun Scale
Australian categories of cyclons
Fujita Tornado Scale
Beaufort Scale

 

Saffir Simpson Hurrikan Scale / Taifun Scale

SS Intensity m/s km/h Landmiles/h Knots hPa
0 Tropical deep 17.2-32.6 63-118.5 34.5-73.7 34-64 - -
1 very dangerous 32.7-42.6 118.5-153.7 73.7-95.5 64-83 >980
2 extremely dangerous 42.7-49.5 153.7-177.8 95.5-110.5 83-96 965-979
3 devastating 49.6-58.5 177.8-209.3 110.5-130.0 96-113 945-964
4 catastrophic 58.6-69.4 209.3-250.0 130.0-155.4 113-135 920-944
5 catastrophic > 69.5 > 250 > 155.4 > 135 < 920

Note:
Also valid for typhoons. Super typhoons are storms with windspeeds higher than 241 km/h (67 m/s).

 

Australian categories of cyclons

Category Wind km/h Gust km/h Central pressure hPa
1 63-88 < 124 > 985
2 89-117 125-164 985-970
3 118-159 165-224 970-955
4 160-199 225-279 955-930
5 > 200 > 279 < 930

 

Fujita Tornado Scale

F Intensity m/s km/h Landmiles/h Knots
0 Light damage 17.2-32.6 62-117 39-72 34-63
1 Moderate damage 32.7-50.1 118-180 73-112 64-97
2 Significant damage 50.2-70.2 181-253 113-157 98-136
3 Severe damage 70.3-92.1 254-332 158-206 137-179
4 Devastating damage 92.2-116.2 333-418 207-260 180-226
5 Incredible damage > 116.3 > 419 > 261 > 227

 

Beaufort Scale

Bft Intensity m/s km/h m.p.h Knots Velocity pressure [kg/m2]
0 Calm 0-<0.5 0-<1.9 0-<1.2 0-<1 0
1 Light air 0.5-<2.1 1.9-<7.4 1.2-<4.6 1-<4 0-0.1
2 Light breeze 2.1-<3.6 4.6-<8.1 7.4-<13 4-<7 0.2-0.6
3 Gentle breeze 3.6-<5.7 13-<20.4 8.1-<12.7 7-<11 0.7-1.8
4 Moderate breeze 5.7-<8.2 20.4-<29.6 12.7-<18.4 11-<16 1.9-3.9
5 Fresh breeze 8.2-<11.3 29.6-<40.7 18.4-<25.3 16-<22 4-7.2
6 Strong breeze 11.3-<14.4 40.7-<51.9 25.3-<32.2 22-<28 7.3-11.9
7 High wind 14.4-<17.5 51.9-<63.0 32.2-<39.1 28-<34 12-18.3
8 Gale 17.5-<21.1 63.0-<75.9 39.1-<47.2 34-<41 18.4-26.8
9 Strong gale 21.1-<24.7 75.9-<88.9 47.2-<55.2 41-<48 26.9-37.3
10 Storm 24.7-<28.8 88.9-<103.7 55.2-<64.4 48-<56 37.4-50.5
11 Violent storm 28.8-<32.9 103.7-<118.5 64.4-<73.6 56-<64 50.6-66.5
12 Hurricane force > 32.9 > 118.5 > 73.6 > 64 > 66.6