HURRICANES The History, Structure, Development, and Destruction Source:

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HURRICANES The History, Structure, Development, and Destruction Source:

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The History, Structure, Development, and Destruction

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HURRICANES The History, Structure, Development, and Destruction Source:

What is a hurricane? Violent cyclonic storm that develops in the tropical region Wind speeds are > 74 mph Source: Newsroom/NewImages/images.php3?img_id=680

Rotation and Pressure In which direction does a hurricane rotate? COUNTERCLOCKWISE Is the barometric pressure inside the hurricane high or low? LOW

When is Hurricane Season? June 1 st through November 31st

What conditions must be present for a hurricane to develop? Warm ocean temperatures (>80˚ F) up to 60m deep Little to no wind shear Low pressure system at least 5˚ North or South of Equator Rotation caused by winds Source: gov/oa/reports/fran/fran.html

What is the major source of energy fueling a hurricane? Heat Energy evaporating from the ocean surface Source:

Hurricane Anatomy Source:

Another look at the Structure Source:

Comparison of Terms Tropical Disturbance Group of thunderstorms in the tropics that are present for at least 24 hours Tropical Wave lack of circulation, winds <25 mph and every direction Tropical Depression closed circulation but disorganized, winds at least 25 mph

Tropical Storm Shower and thunderstorm moves over closed circulation, winds greater than 39 mph Hurricane Eye is developed, winds > 74 mph

Compare the Following Source:

By what two factors is hurricane strength measured? Wind Speed Barometric Pressure

What is the Scale Used to Categorize Hurricanes? Saffir-Simpson Scale CategoryMax Wind Speed (mph) Min. Surface Pressure (mb) Storm Surge m (ft) > (3-5) (6-8) (9-12) (13-18) 5> 155< 920> 5.7 (>19) Source:

What is a storm surge? Large wall or dome of water that rushes into the coastline as a result of a hurricane making landfall To the right are the areas affected by high storm surges Souce:

Hurricane Katrina

Hurricane Katrina-hitting land

Hurricane Katrina

Explain why the deadliest storms were longer ago. Lack of instrumentation to predict and track storms People were not warned of the incoming danger Source: Results of the Galveston Hurricane

Mrs. Parker’s Old House Final Water Level Flooding of Tar River as result of Hurricanes Dennis and Floyd Dockside Tar River Estates

2008 Hurricane Names Arthur Bertha Cristobal Dolly Edouard Fay Gustav Hanna Ike Josephine Kyle Laura Marco Nana Omar Paloma Rene Sally Teddy Vicky Wilfred

Damage to Greenville Source:

Source: THE END