Description A hurricane occurs when a tropical storm exceeds 74 mph (119 kph). It has other names in different parts of the world. In the Northwest Pacific ocean west of the dateline, it is called a typhoon. In the southwest Pacific Ocean west of 160E or Southeast Indian ocean east of 90E it is called a severe tropical cyclone. It is also called a severe cyclonic storm, or a tropical cyclone in other parts of the world. …showed first 75 words of 294 total…

…showed last 75 words of 294 total…actual hurricane, which causes the most damage. This stage contains wind speeds greater than 74 mph and humid ocean air, which results in more precipitation. Atmospheric Requirements In order for a hurricane to form it needs lots of latent heat that is liberated when huge quantities of water vapor condense. Hurricanes can only form over warm water and they must have a lot of a large quantity of moister-laden air to start and to keep going.