Hurracanes

[mpdevine]

Why does hurracane season comes in a differenet time each year?

[Clanad]

Due to the Coriolis effect (simply put, deflection of winds due to Earth's rotation), the regions between 5� and 20� north and south of the equator are the belts where hurricanes can form (there is not enough rotary motion between 5� north and south.
The birth of a hurricane starts as a low pressure zone and builds into a tropical wave of low pressure.
In addition to a disturbance in the tropical ocean water, the storms that become hurricanes also require warm ocean waters (above 80�F or 27�C down to 150 feet or 50 meters below sea level) and light upper level winds. All of this occurs once temperatures and wind conditions are favorable, which occurs, usually, in the late summer or early fall... (Source NOAA). BTW, named after Huracan, a Caribbean god of evil...