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Why do we have hurricanes?
Question Date: 2005-12-08
Answer 1:

Hurricanes are some kind of natural phenomena that are formed from simple complexes of thunderstorms. If a thunderstorm gets cooperation from both the ocean and the atmosphere, it grows to hurricane strength. Once the ocean water becomes warmer than 26.5 degrees Celsius (81 degrees Fahrenheit), the heat and moisture from this warm water turn into the source of its energy. Hurricanes will weaken when they travel over land of colder ocean waters locations with insufficient heat and/or moisture.

A hurricane also needs high relative humidity in the lower and middle troposphere. This high humidity reduces the amount of evaporation in clouds and maximizes the heat released because there is more precipitation. The concentration of heat is critical to driving the system that develops the hurricane.

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