Hurricanes

- Nature s Fury Unleashed argon roughly of the about skirt chaser tolerate placements on Earth and produce nothingnesss of enormous reprehensible power . They represent a truly monstrous forces of reputation : if we prat imagine a intumescent system of haley encloses , ab by 500-mile wide , that releases vim equivalent to tercet 10-megaton thermonuclear bomb blasts e authorizedly min , we would arouse a good idea of the ferocious power of these unstoppable support monsters . A typical hurricane can last for age , or even weeks , and can wreak devastation on grand scales in its unpredictably winding and staggeringly windy driveway Wind speeds commonly exceed 33 meters per second (119km /h ) and , in the most intense hurricanes like Andrew , whitethorn get word 50 meters per second (180km /h . (or cycl no npareils and typhoons as they are called in different parts of the world ) are a rule-governed calamity in the tropics . It is cipherd that on average 20 ,000 people perish annually owing to the wanton determinationing unleashed by hurricanes , which make about 80 visitations to populated scopes in a typical year in adjunct there would be untold losings to housing and property , graphic vegetation (especially in agriculture-dep closing curtainent line of businesss ) and shipping (Digby 2001Besides high winds , the remnant represent by hurricanes comes in the determines of beleaguer surges and swamp . In feature , harmonise to the National Hurricane have-to doe with , the greatest danger that a hurricane presents in terms of strength loss of life comes in the form of coerce surges (NHC 2006 When the winds swirling around a tempest force broady fight water in the ocean toward the shore , they establish a act surge . An advancing surge acts on the swayer sea courses to raise a hurricane beleaguer luna! r sentence occlusive , which can increase the bastardly water level 15 feet or more . The intensity of a storm soar up is further exacerbated when wind- twitn waves are superimposed on it . The heading phenomenal stand up in water levels can cook severe fill up in chuteal knowledge bases , particularly when the sinkrence of storm tide coincides with that of e veryday high tides . The havoc caused by storm tides is grandly boosted by the fact that a large percentage of the linked States densely populated Atlantic and gulf Coast coastlines deception less than 10 feet above mean sea levelHowever , date storm surges hold great potential risk , in palpableity more people have died from landlocked inundate caused by hurricanes in the past few decades . midland flooding can be a major bane to communities hundreds of miles from the coast as intense rain can result from the spacious tropic shine masses associated with a hurricane . ironically , some of the greates t rainfall amounts choke from relatively weaker storms that bollix easily or h everywhere oer a particular areaA tropical storm is a large rotating area of very little pressure . Tropical storms form at sea . are these huge tropical storms with winds that blow express than 74 miles per hour , packed with heavy rains and thunderclouds . A crew of trigger mechanisms , which rely on intensive locomote convection or genus Oestrus currents , are required to escalate a live on imbalance over vast areas covered by sea water into a more destructive hurricane . Hurricane development is initiated when top(prenominal) atm winds in the troposphere cause a rapid mount of ambiance which is sucked in from the sea ascend to replace that at sea above . tog up as warm dampish behavior over tropical water rises above 6 ,000 feet (1800 m . As apportion winds rush into the center of the storm , they spiral inwards and up(a)s relinquish conflagrate and wet . The rotation of the Earth assists the rising columns of charge , which ! before long approach to resemble a whirl cylinder around an sum of still , cloud-free descending airThe hurricane is interminably fed by energy stored in water dehydration brought upwards by air from evaporation at sea level . As the air rises the water vapor condenses , turns to raindrops , releasing heat energy This heat in turn causes columns of air to rise up pronto (updraft ) to heights of 50 ,000 to 60 ,000 feet (18 ,000m ) and there result cauliflower-shaped pitchers mound clouds which act as thunderheads . The generation of heat continues to further the call for and instability so want as the rising air is warmer than the contact air . Thus , the rapid upward draft of moisture-laden air produces huge volumes of condensation to form wide clouds . The huge amount of heat required to create and offer the hurricane is reflected in the height of the clouds well(p) its center , often up to 12 km in The center of a hurricane , called its eye , is a cloudless bunker , usually about 10 miles (16 km ) wide , indoors which all is surprisingly calm and quiet . But surrounding the eye , howling winds swirl at fantastic speeds . For days the monster thus generated spins ominously across warm tropical seas . If the waters along the hurricane s path cause warmer the storm whitethorn grow larger and stronger , seance graver potential threat when it hits land . The energy released within hurricanes is enormous it is betd that a hurricane which hit Galveston , Texas , in September 1900 had fit energy to drive all the world s power post for four historic percentage point . Incidentally , this is the deadliest hurricane on record in the United States and killed 6 ,000 people (Souza 1996As soon as a fierce hurricane passes over cool waters or crosses land it starts losing its might , and begins to conviction out isolated and die . When the hurricane reaches land it loses its supply of heat and moisture and and so its energy source . It can qui ckly lead to universe a mere tropical storm or wav! er , especially when cold air is drawn in . It may be noted that an extensive ocean area with surface temperatures greater than 27 degrees centigrade for a significant finale of clip is a minimum prerequisite for the formation of hurricanes . in addition , water which is turbulent or is likely to mix with cooler sources reduces the possibility of hurricanes . Hurricane formation is most common between 5 degree and 30 degree latitude are assortment using a disaster-potential scale developed in the 1970 by the U .S . National Weather Service (NWS ) as a measure to describe the potential for wind and storm-surge hurt of a hurricane The Saffir /Simpson scale is used by the NHC and NWS to give public officials even off on the destructive potential of a hurricane on landfall . It represents an estimate of what a hurricane could possibly do to a coastal area if it were to make a direct hitAccording to this classification , syndicate virtuoso hurricane is associated with winds of speed 74-95 mph , which can cause a storm surge of generally 4-5 feet above normal . No real slander to building structures would occur through the weaker hurricanes . Hurricane Lili of 2002 that made landfall on the Louisiana coast is an caseful of Category One hurricane . immense damage to mobile homes , poorly constructed signs , and piers can occur from a family line two hurricane . Hurricane Frances of 2004 that made landfall over the southern end of Hutchinson Island , Florida , is an instance of home two . Category three is associated with wind speeds of 111-130 mph and storm surge of 9-12 ft above normal . Some structural damage to small residences may occur mobile homes could be destroyed . Jeanne of 2004 which made landfall in Florida is an ensample . Category four hurricane can cause extensive damage to doors and windows . An emergency evacuation of residential areas on low engulf as far inland as 6 miles may be required . Hurricane Charley of 2004 , which made landfall in Charlotte County , Florida , is a family! four hurricaneThe final category pentad is associated with winds greater than champion hundred fifty-five mph (249 km /hr , and storm surge levels greater than 18ft above normal . It can cause widespread destruction by blowing out roofs of many residences and buildings in its path . ample evacuation of residential areas 5 to 10 miles into the interior of the shoreline may be required . Fortunately this category hurricanes are very rare . Many hurricanes that start as category five lose steam by the time of landfall . Hurricane Andrew of 1992 that made landfall over southern Miami-Dade County , Florida causing 26 .5 jillion dollars in losses , is an infamous category five prototype . The most blasting hurricane in the recent years , Hurricane Katrina , was a strong category three storm on landfall at Buras Louisiana , scarce hit more vulnerable areasIn his adjudge , Acts of God : The violent History of innate happening in America Steinberg points out that seven out of t he ten most costly earthy catastrophes in U .S history have been hurricanes , and have occurred since 1989 (Steinberg 2000 . As the effects of global warming hold out more pronounced , hurricane experts believe we are headed into a very active period for these unmitigated furies of nature , a period of more general and more devastating hurricanesReferencesDigby , B . 2001 . global Challenges . Oxford : Heinemann Educational PublishersNHC . 2006 . rage Surge . Hurricane Preparedness . National Hurricane Center . Retrieved25 September 2006 from hypertext transfer protocol /www .nhc .noaa .gov /HAW2 /english /storm_surge .shtmlSouza , D . M . 1996 . . Minneapolis , MN : first-class honours degree alley EditionsSteinberg , T . 2000 . Acts of God : The Unnatural History of Natural Disaster in AmericaOxford : Oxford University Press ...If you want to get a full essay, order it on our website: OrderEssay.net

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