Formation of the Cyclones.

Tropical Cyclones typically forms over large bodies of relatively warm water. They derive their energy from the evaporation of water from the ocean surface,which ultimately recondenses into clouds and rain when moist air rise and cools to saturation. This energy source differs from that of mid-latitude cyclonic storm, such as northeastern and European windstorms, which are fueled primarily by horizontal temperature contrasts. The strong rotating winds of a tropical cyclone are a results of the (partial) conservation of angular momentum imparted by the Earth's rotation as air flows inwards toward the axis of rotation. as a result, they rarely form within 5° of the equator. Tropical Cyclones are typically between 100 and 4,000 km (62 and 2485 mi) in diameter.A Cyclone is turned into a Hurricane when the wind speed reach the 120 km per hour (75 mph).