Saffir-Simpson Hurricane Scale

Classification knots mph km/h Pressure
Tropical Depression 0-34 0-38 1-61 --
Tropical Storm 35-63 39-73 65-118 --
Hurricane Category 1   64-82 74-95 119-153 980 mbs
Hurricane Category 2 83-95 96-110 154-177 965 mbs
Hurricane Category 3 96-112 111-129 178-208 945 mbs
Hurricane Category 4 113-136 130-156 209-251 920 mbs
Hurricane Category 5 137 up 157 up 252 up under 920
This scale was adjusted in 2012 to account for conversions between knots, mph and km/h

An interesting collection of social media, maps, coverage and projects that grew out of the 2012 hurricane: The Most Innovative Digital Coverage of Superstorm Sandy

TOP back