As less moisture is evaporated into the atmosphere to supply cloud formation, the storm weakens. Sometimes, even in the tropical oceans, colder water churned up from beneath the sea surface by the hurricane can cause the hurricane to weaken (see Interaction between a Hurricane and the Ocean).
Hurricanes may lose strength over land because of cool temperature, a lack of moisture, and /or friction.Hurricanes form over low pressure regions with warm temperatures over large bodies of water.The warm temeprature causes the ocean water to evaporate.
