Saffir-simpson hurricane scale

Saffir–Simpson hurricane scale

A classification scheme for hurricane intensity based on the maximum surface wind speed and the type and extent of damage done by the storm.

The wind speed categories are as follows: 1) 33–42 m s⁻¹ (65–82 knots); 2) 43–49 m s⁻¹ (83–95 knots); 3) 50–58 m s⁻¹ (96–113 knots); 4) 59–69 m s⁻¹ (114–134 knots); and 5) 70 m s⁻¹ (135 knots) and higher. These categories are used routinely by weather forecasters in North America to characterize the intensity of hurricanes for the public.

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