Hurricane
Main Entry: 1hur·ri·cane
Pronunciation: \'h?r-?-?kan, -i-k?n, 'h?-r?-, 'h?-ri-\
Function: noun
Etymology: Spanish huracán, from Taino hurakán
Date: 1555
1 : a
tropical cyclone with winds of 74 miles (119 kilometers) per hour or greater that occurs especially in the western Atlantic, that is usually accompanied by rain, thunder, and lightning, and that sometimes moves into temperate latitudes
2 : something resembling a hurricane especially in its turmoil
The scale was formulated in 1969 by Herbert Saffir, a consulting engineer, and Dr. Bob Simpson, director of the National Hurricane Center. The World Meteorological Organization was preparing a report on structural damage to dwellings due to windstorms, and Dr. Simpson added information about storm surge heights that accompany hurricanes in each category.
Saffir - Simpson Scale