Naming hurricanes began in 1953

Naming hurricanes began in 1953 - Christie Strawser Natural...

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Christie Strawser Date Due: 4/29/08 Natural Disasters Essay Date Submitted: 4/29/08 Not to Mention Katrina Naming hurricanes began in 1953. Hurricanes are given human names because each one has it’s own personality. They live just long enough that they will develop their very own characteristics that separate it from every other hurricane. “A hurricane is a large tropical cyclone (353).” “A tropical cyclone is any weather system formed over tropical waters that rotates counter clockwise in the Northern Hemisphere (499).” They resemble “heat engines that convert the heat energy of the tropical ocean into winds and waves (353).” They are huge storms that can generate winds over 150 mph. Hurricanes can force huge amounts of seawater onshore as surges that temporarily raise sea level over 20 ft. causing dangerous floods. Hurricanes expend excess tropical heat that builds up during long hot summers to the mid latitudes. There are 4 things that must happen before a hurricane can form. First, seawater should be at least 80 degrees Fahrenheit in the upper 200 ft of the ocean. Second, air must be unstable, warm, and humid. Third, upper-level winds should be weak and preferably blowing in the same direction as the developing storm is moving, and lastly, there must be a Coriolis effect to spin the system (353). “The 80 degree temperature is an important factor for hurricane development. As the sea-surface temperature increases, the amount of water vapor that air can hold increases exponentially, When the 80 degree threshold is exceeded, the amount of latent heat lifted from the tropical ocean becomes large enough to fuel a hurricane (353).” Development of a hurricane starts with a tropical disturbance, where a low-pressure zone draws in an unorganized cluster of thunderstorms with weak surface winds. As surface winds grow stronger and flow more efficiently around and into the center of the growing storm, it becomes a tropical depression and receives and identifying number.
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The storm becomes a tropical cyclone. The winds continue to spiral up the core wall at increasing speeds as the cyclone grows in strength. When surface wind speeds exceed 63 mph, it has become a tropical storm. IT matures to hurricane status when the surface winds consistently exceed 74 mph. The strength of a hurricane depends on the speed that surface winds can flow into the central core, race up the sides, and easily flow out and away in the upper atmosphere. As the central core becomes more chimney-like, the hurricane grows stronger (354). “The average hurricane generates energy at a rate 200 times greater than our worldwide capacity to generate electricity. The kinetic energy of winds in a typical hurricane is about half of our global electrical capacity. The energy released in a hurricane by forming clouds and rain is 400 times greater than the energy of its winds (354).” The eye is the calmest part of a hurricane. Surrounding the eye is the eye wall, which is the most violent part of a hurricane. The eye wall is almost a complete ring of thunderstorms and
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Naming hurricanes began in 1953 - Christie Strawser Natural...

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