In the beginning, a disturbance forms in the atmosphere, developing into an area of low atmospheric pressure. Winds begin to move into the center of the storm seedling from surrounding areas of higher air pressure. Warm water heats the air, and it rises as it nears the center.
The ocean feeds warmth and moisture into the developing storm, providing energy that causes the warm air in the center to rise faster. It condenses high in the atmosphere, creating thunderstorms.
If conditions are favorable, a tropical depression develops into a tropical storm, then finally into a hurricane, which is not unlike a giant swirling mass of thunderstorms.
As rising air in the storm's center condenses, it produces heat, forcing it to rise even faster. The air is pushed out the top -- much like smoke out the chimney of a fire -- and more air has to rush in at the surface to take its place. This kicks the ocean up more and, well, you can see that the storm essentially feeds on itself.
Formation can be throttled or thwarted by, among other things, strong winds aloft that shear off a storm's chimney.
All low pressure systems, including hurricanes, rotate counterclockwise in the Northern Hemisphere. Here's why: When an area of low atmospheric pressure forms, wind begins to flow toward the center of it, near the surface. All the while, Earth is rotating under the atmosphere. In the Northern Hemisphere, Earth's spin causes an apparent deflection of the wind to the right, as seen from above. This Coriolis effect, as it is called, forces a counterclockwise rotation for all storms in the Northern Hemisphere.
Can you stop the storm? When hurricanes move over cooler northern waters, as while racing toward the U.S. Northeast, they loose strength as the fuel supply cools.
Storms also tend to pick up speed as they head north, and can reach forward speeds of 55 mph by the time they near Long Island. This forward speed is added to the internal wind speed on the right side of a storm, and it can take a Category 1 storm and effectively make it a Category 4 in a narrow region.
Hurricanes also run out of steam over land. Some people think it's due to friction. That's a myth.
The truth is a hurricane loses its fuel, the warm water, when it moves over land. In hours, a Category 4 or 5 storm can weaken to tropical storm status.
But the moisture picked up while offshore can continue to pour down copiously for days.
A hurricane over land is robbed not just of heat but of moisture source. That cuts down on the ability to produce thunderstorms near the center. This reduces convection, which also serves to weaken the storm.
Studies have found that curious things happen at landfall that are related to the friction myth, however.
Upon landfall, the top sustained winds -- those that last a minute or longer -- can drop due to a dampening effect caused by rough terrain -- bushes, trees and houses. But a corresponding increase in brief gusts sort of makes up for this, danger-wise. The gusts are enhanced by turbulence caused by the rough terrain, bringing faster winds to the surface in bursts that last a few seconds.
2007-08-19 00:56:58
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answer #1
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answered by 8-) Nurf Herder 4
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It's difficult to accept that something of this magnitude would happen or be allowed to happen. It causes a lot of people to question themselves and the motives of a whole society when we consider what the effects are and how far reaching the results will be.If you think of a small leak in your bathroom faucet over a long period of time you might have trouble comprehending just how much water is being wasted. But when you consider thousands of gallons of oil over this period of time it factors out to probably be equivalent to years if you compared it to other situations such as the war that this country is now involved in. It's hard to think that this present situation would ever fall away from the hearts and minds of any human being whether they live in this country or not. This affects anyone who cares about people, plants and animals. The trick is not to watch too much of the news and understand that many many people share your feelings about this and I doubt seriously if anyone will forget this for years to come. It's a lot like a war that touches millions of people for the loses than that take place. And it true the earth will never be the same. And it's also true that there are purposes that we can grasp fairly easy and others that are harder to accept. This is one of the latter.This involves everybody and everything and until we wake up to that issue and do more to demonstrate our intentions not to allow these situations to exit, the more we'll find ourselves facing such challenges. It comes down to how much we drive our cars and boats and even to how often we mow the grass. How much we support obsolete ideas and the people that perpetuate those ideas. A lot of stuff that seems innocent is not so innocent when you connect the dots financially and socially. It's easy not be aware. There's a certain discomfort in knowing what must be known. In your discomfort and concern you are doing a lot. It may not seem like much but your attitude is worth a lot and it's important that you weigh in the way you have. If you inspire others you have done a great deal. I salute your caring. Just remember that the visualization of a good outcome to something tragic is the answer. The earth is more resilient than you think. Remember to accept the good! There's a lot of that also!
2016-05-17 06:43:43
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answer #2
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answered by ? 3
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Hurricanes are a product of the interaction between hot and cold air over the ocean. In a high school science class, our teacher once suggested the idea to us of man being able to stop a hurricane by dropping a substance on it from above that would suck the water out of the storm completly. The only problem with this would be getting enough of the chemical to drop on the storm.
2007-08-19 00:47:35
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answer #3
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answered by Pace 5
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Hurricanes are necessary to life on Earth as we know it. They circulate ocean waters, bringing up nutrients that have settled and cleanse the ocean and air. No we can't stop them, and that's good.
2007-08-19 02:56:39
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answer #4
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answered by Anonymous
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