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Definition: hurricane from

Philip's Encyclopedia

Wind of force 12 or greater on the Beaufort Wind Scale; intense tropical cyclone with winds ranging from 120 to 320km/h (75 to 200mph), known also as a typhoon in the Pacific. Originating over oceans around the Equator, hurricanes have a calm central hole, or eye, surrounded by inward spiralling winds and cumulonimbus clouds.

Summary Article: hurricane from The Columbia Encyclopedia
hurricane, tropical cyclone in which winds attain speeds greater than 74 mi (119 km) per hr. Wind speeds gust over 200 mi (320 km) per hr in some hurricanes. The term is often restricted to those storms occurring over the N Atlantic Ocean; the identical phenomenon occurring over the W Pacific Ocean is called a typhoon; around Australia and over the Indian Ocean, a tropical cyclone. Hurricanes have a life span of 1 to 30 days. They weaken and are transformed into extratropical cyclones after prolonged contact with the colder ocean waters of the middle latitudes, and they rapidly decay after moving over land areas. Formation of Hurricanes A cyclone that eventually reaches hurricane intensity first passes through two intermediate stages known as tropical depression and tropical storm. Hurricanes start over the oceans as a collection of storms in the tropics. The deepening low-pressure center takes in mois...    Continue Reading
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