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Hurricanes Typhoons and Cyclones

Cyclone is the generic term for a low-pressure system with surface winds spinning in a circular motion. The six main types of cyclones are polar cyclones, polar lows, extratropical cyclones, subtropical cyclones, tropical cyclones, and mesocyclones. When the winds reach speeds of 74 miles per hour, a tropical cyclone might be called a hurricane or typhoon, depending on the region where it formed.