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Best Answer: Tornado: A violently rotating column of air in contact with the ground or Water (WaterSpout) and extending from the base of a thunderstorm. Cyclone: An atmospheric closed circulation rotating counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. The term hurricane is used for Northern Hemisphere tropical cyclones east of the International Dateline to the Greenwich Meridian.
They are both tropical cyclones. A tropical cyclone with wind speeds less than 39 mph is a tropical depression. A tropical depression lacks the familiar shape and eye of the m â¦ ore severe tropical cyclones A tropical storm is a tropical cyclone has wind speeds between 39 mph and 73 mph. tropical depression is a tropical cyclone with sustained winds under 39 mph. A tropical storm one with sustained winds from 39 mph to 73 mph. A hurricane is a tropical c â¦ yclone with sustained winds of 74 mph or greater. 3 people found this useful.