By the way, cyclones, hurricanes, and typhoons are the same thing: depending on where they are born, they are called by one name or another. What do fronts encourage? The Tropical Cyclones. When a hurricane makes landfall (comes ashore), the storm surge causes extensive flooding. Since Cyclones occur in all types of different areas, cyclones mostly happen in ocean. Cyclones are called hurricanes in the Atlantic and eastern Pacific, typhoons in Southeast Asia, and cyclones in the Indian Ocean and western Pacific around Australia. Cyclones are characterized by inward spiraling winds that rotate about a zone of low pressure. The different names have to do with where the storms form. Start studying Tropical cyclones. Cyclones are one of nature’s responses when there is a meeting between hot and cold air currents. Because Tropical Cyclones form over tropical or subtropical waters and feed on the heat that is released when moist air rises. Tropical cyclones generally form in any ocean where water temperatures are greater than 80 degrees Fahrenheit and the upper-level winds are benign. Hurricane Season normally begins at the time at which an area of the ocean temperature is at its warmest. Cyclones form in the South Pacific and Indian Ocean, which is the ocean that borders Northeast Australia. Cyclone Yasi is a big one, with predicted wind speeds of over 295km/h, a core region 500km in diameter, and a zone of associated storm activity spread over 2000km. Hurricanes, for example, are the names given to tropical cyclones in the United States and the Antilles. Cyclones also need to be at least 310 miles from the equator. Most occur between December and April. When the warm air rises, cold air on all sides drops, and spinning occurs due to the Coriolis effect. How do cyclones form: Genesis of a Cyclone. The Coriolis effect is less prominent along the equator, so tropical cyclones usually do not develop within five degrees north or south of the equator. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Cyclones happen most in Australia. What is a Tropical Cyclone. Tropical cyclones which occur in the Atlantic region and affect the Caribbean and USA usually comprise less than 15% of global tropical cyclone activity. These are circular shaped rotating storms which have huge diameters ranging from 150 to 1000 kilometres.Due to this high speed rotation, an intense low pressure is formed at the centre; this is called the “Eye of the storm”.Cyclones of high intensity are caused mostly in tropical areas. Where Do Tropical Cyclones Form? Tropical cyclones also occur in various parts of the Pacific Ocean, and can affect coastal regions of Mexico, southeast Asia, northeast Australia and the south Pacific islands. 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