Hurricanes are powered by the latent heat energy released from condensation . To form and develop they must be supplied with a constant supply of warm humid air for this process. Surface air with enough energy to generate a hurricane only exists over oceans with a temperature greater than 26.5 degrees Celsius. Ocean temperatures this high only occur in selected regions and during particular seasons. Hurricane development does not occur if a temperature inversion exists in the atmosphere.
Inversions develop in the tropics when subtropical high pressure systems produce sinking air.
Also, hurricanes do not develop in the region 5 degrees either side of the equator. Within this region Coriolis force is negligible. Coriolis force is required for the initiation of cyclonic flow. Hurricanes dissipate when their energy supply is substantially reduced. This occurs either with landfall or storm movement into cooler seas.