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Hurricanes

Hurricanes. HURRICANES. How Hurricanes form.

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Hurricanes

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  1. Hurricanes HURRICANES

  2. How Hurricanes form • Hurricanes form over a large mass of warm ocean water during the warmer months. Air from surrounding areas with higher air pressure pushes in to the low pressure area. Then that “new” air becomes warm and moist and rises, too. As the warm air continues to rise, the surrounding air swirls in to take its place. As the warmed, moist air rises and cools off, the water in the air forms clouds. The whole system of clouds and wind spins and grows, fed by the ocean’s heat and water evaporating from the surface.

  3. Hurricanes • Most form over warm ocean waters between 5 and 20 degrees latitude • Warm ocean air rises leaving low pressure near the surface • Low pressure area fills, becomes warm air and rises • Swirls and forms a cyclone • North of equator swirls counterclockwise • South of equator swirls clockwise • Hurricanes slow and lose energy when they come inland due to lack of warm ocean air as fuel • Referred to as a "cyclone" in the Indian Ocean and South Pacific, "hurricane" in the Western Atlantic and Eastern Pacific and "typhoon" in the Western Pacific.

  4. Give it some thought • Where do most hurricanes form? • Identify the Geographic regions that the following occur: • Cyclone • Hurricane • Typhoon

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