Saffir-Simpson Hurricane Scale

Classification Speed (knots) Speed (mph) Pressure (mbs)
Tropical Depression 0-34 0-38 --
Tropical Storm 35-63 39-73 --
Hurricane Category 1 64-82 64-95 980 mbs
Hurricane Category 2 83-95 96-110 965
Hurricane Category 3 96-112 111-130 945
Hurricane Category 4 113-134 131-155 920
Hurricane Category 5 over 134 over 155 under 920

See the Beaufort Scale for more information about wind speed categories. (Weather Page)

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