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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.
A tornado on the other hand is a violent rotating column of air that is contact with both the ground as well as a cumulonimbus cloud. A hurricane can cause wind speed of 74mph to over 155mph, compared to a tornado whose wind speeds are between 40mph and 360mph. Tornadoes form on the land, while some can form on water; however a hurricane forms on the water. A hurricane is also known as a tropical cyclone.