40 - storm surge; 20 foot tides Why so many deaths when...

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Tropical Disturbance - small clusters of t-storms, weak pressure gradients, no rotation Tropical Depression – storm intensifying Tropical Storm (wind speeds above 37mph -- Officially given a name) Hurricane ( wind speeds 74 mph +) Storm Surge Rise in sea level due to intense low pressure in the center of the storm. When a storm surge moves in at high tide it can inundate and destroy a wide swath of coastal lowlands. Two processes create storm surge: 1. piling up of water due to drag of surface waters. 2. Low atmospheric pressure – for every millibar the pressure decreases, the water level rises .4 inches. Hurricane Camille August 17, 1969 Category 5 - Storm surge @ 25ft Camille killed 259 people and caused $1.42 billion (1969 USD, $9.14 billion 2005 USD Hurricane party – people did not leave and stayed on the 3rd floor . With rising surge, building collapsed – 2 dozen died. 1900 – Galveston hurricane Pressure - 964mbGreatest disaster in U.S. history; More than 8,000 killed mainly from
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Unformatted text preview: storm surge; 20 foot tides Why so many deaths when comparing storms to today? Tropical and Equatorial Weather Systems Impacts of Tropical Cyclones Destruction from hurricanes: High winds Wave action Storm surge High rains and freshwater flooding Storm surge: rapid rise of coastal water level accompanying the onshore arrival of a tropical cyclone Tropical and Equatorial Weather Systems Impacts of Tropical Cyclones Hurricane Katrina, 2005 Struck Louisiana and Mississippi gulf coasts New Orleans vulnerable to flooding Storm surge overtopped and breached levees and floodwalls 80% of New Orleans covered with water up to 6 m (20 feet) deep Thunderstorms Greatest number of thunderstorms occur in moist tropical realms, especially Africa. Florida Highest frequency in the U.S....
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This note was uploaded on 06/12/2011 for the course GEOGRAPHY 600-201010 taught by Professor Christopherpost during the Spring '10 term at Kent State.

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40 - storm surge; 20 foot tides Why so many deaths when...

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