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Tropical cyclones, also called typhoons and hurricanes, usually occur at predictable times of year in distinct parts of the world. Tropical storms lose their strength as they move over land. The range of error in the forecast of the path of a tropical storm can be significant.
How Typhoons Occur. Researchers are continuously working toward and discovering new information on the phenomena of tropical cyclones as there is still much regarding the system that is unknown. Typhoons occur when a rough weather wave, using the Earth's rotation, begins to rotate (also known as the Coriolis effect).