Hurricane Ike Hurricane Gustav How does weather affect society?
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Transcript of Hurricane Ike Hurricane Gustav How does weather affect society?
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Hurricane Ike
Hurricane Gustav
How does weather affect society?
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What is a Hurricane?One of three names used to
describe rotating tropical storms with a wind of at least 74 mph.
Hurricane – Atlantic OceanCyclone – Indian OceanTyphoon – Western Pacific
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Tropical Depressions – Wind speeds of 38 mph
Tropical Storms – Winds of over 39 mph
Hurricanes – Winds of at least 74 mph
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How Does a Hurricane Form?• Warm moist air moves over the ocean
• The Ocean water MUST be over 80°F
• Water Vapor rises into the atmosphere (less dense)
• Creates a LOW pressure system
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As water vapor cools it condenses into liquid droplets
Condensation releases heat energy, feeding the hurricane
Warmed air continues to rise, cooler air replaces the warm rising air creating more wind
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Coriolis EffectIn the Northern
Hemisphere hurricanes rotate counter clockwise
In the Southern Hemisphere hurricane rotate clockwise
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Anatomy of a HurricaneEye – Low pressure center of the hurricane
Eye Wall – Surrounds the eye, most violent part of storm
Rain bands – Bands of rain showers with gusty winds, outermost layer
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Hurricane Structure
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Hurricane CategoriesSaffir – Simpson Scale
Category 1: 74-95 mphCategory 2: 96-110 mphCategory 3: 111-130 mphCategory 4: 131-155 mphCategory 5: 155+ mph
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Hurricane DamageRainFloodingHigh Sustained
WindsStorm SurgeTornadoes
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How do Hurricanes end?Hurricanes lose energy when they go over
landHurricanes can lose energy when they move
over colder waterThere is no moisture or heat to feed the
hurricane
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Hurricane SeasonJune 1 to
November 30 in the Atlantic, Caribbean, Gulf of Mexico, and Central Pacific
May 15 to November 30 in the Eastern Pacific
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Famous Hurricanes
Galveston, TexasHurricane AndrewHurricane CamilleHurricane FloydHurricane Hugo
Hurricane Katrina