"As you already know, hurricanes and other low-pressure systems spin counterclockwise in the northern hemisphere (above the equator) and clockwise in the southern hemisphere (below the equator).
I asked some of my co-workers, and none of us have ever heard of a hurricane ever crossing the equator. You are correct that if this ever happened, the storm would have to come to a stop and begin spinning in the other direction.
The reason? The coriolis force. This is the force that causes hurricanes to rotate in the direction they do. It also causes the storms to move to the right as they move away from the equator. Your teacher can show you a neat trick using a magic marker, a record player, and a piece of construction paper. Put the construction paper on the record player and turn the player on. Then try drawing a line from the center of the paper to the outside edge. Notice what happens to the line you draw. The same thing happens to the path of a hurricane.
The coriolis force is "zero" at the equator and increases as you travel away from the equator. Hurricanes can't form within 2 or 3 degrees of the equator, because the coriolis force is just too small. "
2007-02-07 04:03:58
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answer #1
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answered by Yahzmin ♥♥ 4ever 7
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Hurricanes do not and cannot cross the equator. A hurricane needs the Coriolis effect to start turning. This is zero at the equator and is not strong enough to start the rotation of the system within 5° of the equator. This means that the system must form further than 5° from the equator.
At that distance from the equator, the steering winds for the storm are away from the equator not towards it so the hurricane moves further away. If conditions were such that the winds could blow the storm towards the equator, the other pre-requisites for a hurricane would not be there and so a hurricane would not form.
2007-02-07 15:50:08
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answer #2
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answered by tentofield 7
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They hardly move across the equator because of the wind.
The equator has the warmest temperature and ind is created as warm air rises and colder air drops down, and the warm air ot the equator pushes the cold air on the two sides of it (directing winds North and South), which makes winds blow away from the equator, therefore not allowing the hurricane to cross the equatorial line.
It can happen though in uncertain conditions but very hard, as the hurricane would have to start spinning in the opposite direction, which does sound weird.
2007-02-07 12:30:12
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answer #3
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answered by Coverup guy 2
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Yes it is possible though I think it is somewhat unusual. There is nothing at the equator to stop a hurricane. Most Atlantic Hurricanes travel westward and northward based on prevailing winds. If conditions were right the hurricane or cyclone could turn toward the equator.
2007-02-07 12:01:12
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answer #4
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answered by JimZ 7
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