Track of Hurricane Charley, August 9-15, 2004
Courtesy of USGS based on data from the National Weather Service
Each hurricane moves across the ocean and usually hits the land too. How do we know which way a hurricane will go? Several different things control where a hurricane goes.
Global winds carry hurricanes from one place to another. In the warm tropics these winds blow from east to west. In the Atlantic, storms are carried by these winds from the coast of Africa to the Caribbean and North America.
After a hurricane crosses an ocean and reaches a continent, the winds weaken. This means that the Coriolis Effect has more of an impact on where the storm goes. In the Northern Hemisphere the Coriolis Effect can cause a tropical storm to curve to the north.
When a storm starts to move north, it moves into another type of global wind that blows from west to east. These winds move in the opposite direction from the tropical winds. This makes the hurricane move east as it travels north.
All these things can make a hurricane move in a typical path, like the one in this picture. However, not all hurricanes are typical! There are other factors that affect a hurricane's path too. Some hurricanes make very complex paths that are not at all typical.
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