Answer:
warm weather over the oceans for prolonged period of time
Explanation:
The hurricanes form when there's warm weather for longer period of times over the ocean or sea water. Because of the warm weather, the water becomes very warm, resulting in warm and moist air above it, thus giving the basis for the hurricane. The warm and moist air rapidly rises up and moves. As it moves, it encounters colder and drier air masses, and as this happens, there's a big collision, that causes large scale condensation of the large, warm, moist air mas, and very strong air movements, or rather winds. When that happens, the hurricane occurs. The winds have very high speed and are very destructive, and the amount of rainfall is enormous in a very short period of time, often causing very big floods in the areas where the hurricane occurs.
