Hurricanes start over the warm tropical water of the north Atlantic ocean near the equator between five degrees and twenty. Most hurricanes start in the late summer or early fall when sea temperatures are at their highest. Hurricanes do not start within five degrees of the equator because the coriolis effect is too weak to initiate the necessary rotary motion.

Hurricanes form when the warm waters heats the air above it and the updrafts of warm, moist air begin to rise. Day after day the cumuli form atop the updrafts. The cloud tops rarely rise higher than about 6,000 feet. At that height in the tropics, there is usually a layer of warm, dry air that acts like an invisible ceiling or lid. Every now and then something happens in th

e upper air that destroys this lid. This is the first step in the birth of a hurricane. After this lid is broken warm moist are rises higher and higher. heat energy, released as the water vapor in the air condenses, as this happens it drives the upper drafts to heights of 50,000 to 60,000 feet. Outside the storm area, air moves in over the sea to replace the air going upwards in the thunderheads. The air begins swirling around the storm center. As it swirls over the sea it soaks up more water vapor. At the storm center the new water vapor gets pulled into the thunderhead updrafts, releasing more energy as the water vapor condenses and in a few days the hurricane will be greatly larger in size. The hurricane also takes it shape at this time which is a donut shape.

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Approximate Word count = 821
Approximate Pages = 3 (250 words per page double spaced)