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WEATHER
Lesson 5 - Page 4

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Hurricanes are a type of storm that forms over the tropical regions of the world’s oceans. By definition, a hurricane is a storm that has a wind speed greater than 118 kilometers per hour (74 miles per hour). The Sun beats down on the ocean waters day after day and the air above this water gets hot. Cold air moving in from many directions, pushes this hot air straight up until the hot air reaches a cool layer of air. The water vapor condenses very suddenly and becomes a driving rain. Cooler air from the outside moves in, in a whirling motion, like water going down a drain. The center or "eye" of the hurricane is calm, but all around it the winds and rain are swirling

The term hurricane is only used in North and Central America. It comes from the word Huracan, the Caribbean name for the god of evil. Hurricanes have different names in other part of the world. In Asia, they are called typhoons. In the Southern Hemisphere, they are called tropical cyclones.


Hurricane in the Atlantic


Approaching hurricane

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