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Unformatted text preview: the ocean surface up to 29542.5 feet above sea level. Scientists use the Saffir-Simpson scale to measure hurricane strength. It has five categories that measure the wind speed and storm surge. A storm surge is a wall of wind-driven water that sweeps over the coastline when a hurricane strikes land. Category 1 hurricanes are the weakest. Maximum wind speed is no more that 91.8 miles per hour, but category 1 hurricanes can uproot trees and cause minor building damage. Category 5 hurricanes are devastating storms. Wind speeds exceed 150 miles per hour, and the storm surge is more that 18 feet. Hurricanes of this strength destroy buildings and can cause great loss of life....
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- Fall '11