Saffir-Simpson Scale

 

Saffir-Simpson Scale for Hurricane Classification
Strength Wind Speed
(Kts)
Wind Speed
(MPH)
Pressure
(Millibars)
Pressure
Category 1 64- 82 kts 74- 95 mph >980 mb 28.94 "Hg
Category 2 83- 95 kts 96-110 mph 965-979 mb 28.50-28.91 "Hg
Category 3 96-113 kts 111-130 mph 945-964 mb 27.91-28.47 "Hg
Category 4 114-135 kts 131-155 mph 920-944 mb 27.17-27.88 "Hg
Category 5 >135 kts >155 mph 919 mb 27.16 "Hg
Tropical Cyclone Classification
Tropical Depression 20-34kts
Tropical Storm 35-63kts
Hurricane 64+kts or 74+mph

 

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