Hurricanes form and are sustained by transport
 of heat in water
 vapour, requiring huge
 areas of fairly deep warm water.  Cool water
 doesn't produce enough vapour to power such
 strong winds, and cool air
 can't carry
 much anyway.  It takes an enormous amount of sunlight
 energy storing enough heat throughout the water
 to set up the required
 conditions.

 In the long run, winds are
 driven by differences in average heat
 received from the sun between different areas
 of the planet's surface.