11 Hurricanes-severe weather_FA09

11 Hurricanes-severe weather_FA09 - Review. W E Which...

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W E Which direction is wind coming from in this photo? Leeward Windward Which is the leeward side of the mountain? Review….
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Tropical cyclones (hurricanes) are low pressure centers with all the characteristics of low pressure cells and winds that exceed 74 mph When do they form in N. Atlantic and why then? Where do hurricanes form and what is their energy source? Over tropical oceans, Warm water. they lose energy quickly over land or cold water June 1—Nov 30 (warm water) with peak in Sept due to temp lag of water
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Why no hurricanes at the equator?
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2009 Ana Bill Claudette Danny Erika Fred Grace Henri Ida Joaquin Kate Larry Mindy Nicholas Odette Peter Rose Sam Teresa Victor Wanda Hurricane names
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Note categories by wind speed – Saffir-Simpson Scale Cat 3-5 “Major”
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Patterns of precipitation in a tropical cyclone: Spiral bands of alternating rain/dry Where is the strongest wind (and pressure gradient? Eyewall
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Major categories of hurricane damage: wind, storm surge, flooding, tornados, rip tides 1)population 2)size of hurricane 3)ocean floor topography 4)land/coastline topography A few other important variables: Storm surge and flooding are by far the most damaging
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90 mph Storm speed N at 10 mph A B Hurricane cells move at the same time winds in them are blowing independently. Ex. (Fictitious) Hurricane Hiraldo—what are effective wind speeds going to be at points A and B (approximately)? 90 + 20 = 110 mph
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11 Hurricanes-severe weather_FA09 - Review. W E Which...

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