Thursday, February 4, 2010

Hurricanes



Hurricane: develops over the Atlantic or Eastern Pacific
Cyclone: forms over the Bay of Bengal and the Northern Indian Ocean
Typhoon: develops in the Western Pacific

Tropical depression: winds up to 38mph
Tropical storm: winds more than 39mph that pick up from moving across the ocean
Hurricane: winds that reach speeds of 74mph

The Saffir-Simpson Scale is used to rank a hurricanes intensity
-this scale uses wind speed to rate a hurricane

Parts of a Hurricane
The Eye
-located in the middle of the storm
-Relatively calm weather due to sinking walls of air

The Eye Wall
-Surrounds the eye
-Fastest, most violent part of the storm

The Feeder Bands
-Outermost layer of the storm
-Rain with gusty winds

A Storm Surge: A rise in the sea level (hurricane hazard that is responsible for the most deaths)

The necessary conditions for a hurricane to form include:
-warm ocean temperature
-high humidity
-low pressure

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