Evaporation and condensation continue, building the cloud columns higher and larger. The warmed air rises and is pulled into the column of clouds. When the water vapor from the warm ocean condenses to form clouds, it releases its heat to the air. Meteorologists have divided the development of a tropical cyclone into four stages: Tropical disturbance, tropical depression, tropical storm, and full-fledged tropical cyclone. NOAA's GOES-East weather satellite zoomed in on the eye of Hurricane Dorian in September 2019. As it rises, the water vapor cools, and condenses back into large water droplets, forming large cumulonimbus clouds. As the wind passes over the ocean's surface, water evaporates (turns into water vapor) and rises. In the case of hurricanes that form in the Atlantic Ocean, the wind blowing westward across the Atlantic from Africa provides the necessary ingredient. The second ingredient for a tropical cyclone is wind. That is why tropical cyclones form only in tropical regions where the ocean is at least 80 degrees F for at least the top 50 meters (about 165 feet) below the surface. So the first ingredient needed for a tropical cyclone is warm ocean water. Tropical cyclones are like engines that require warm, moist air as fuel. Whatever they are called, the same forces and conditions are at work in forming these giant storms, any of which can cause damage or devastation when they hit land where people live. Other names they are given, depending on where in the world they are born, are typhoons, cyclones, severe tropical cyclones, or severe cyclonic storms. The generic, scientific term for these storms, wherever they occur, is tropical cyclone. Actually, the term hurricane is used only for the large storms that form over the Atlantic Ocean or eastern Pacific Ocean. They form near the equator over warm ocean waters. Hurricanes are the most violent storms on Earth. #Ocean waves cartoon download#Watch this video to learn how hurricanes form! Click here to download this video (1920x1080, 125 MB, video/mp4).
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