Stroms
Hurricanes, cyclones, and typhoons are a major hazard in the Tropics. Every year, some 80 occurrences claim, on average, 20 000 lives and cause immense damage to property, natural vegetation, and shipping.A hurricane is a large rotating storm around a centre of very low pressure with values of 950mb or lower. Most systems have a diameter of about 650km, less than half that of a mid-latitude depression. Wind speeds often exceed 33m per second (119km per hour) and, in the most intense hurricanes like Andrew, may reach 50m per second (1 8Okm per hour). The huge amount of heat required to create and maintain the hurricane is reflected in the height of the clouds near its centre, often up to ]2km above the Earth.A number of trigger mechanisms, which rely on intensive rising convection currents, are required to transform a tropical disturbance into a more destructive hurricane. The development of a hurricane is dependent on combinations of particular.mechanisms. An extensive ocean area with surface temperatures greater than 27 "C for a significant period of time. Sufficient spin from the Earth's rotation to trigger the vicious spiral in the centre of the hurricane, usually bet
Small buildings overturned or blown away. Low-lying coastal roads inundated, minor pier damage, some small craft in exposed anchorages torn from moorings. ween latitudes 50 and 30cl north and south of the Equator. Practically all poorly constructed signs blown down. Some structural damage to small buildings. Low-lying escape routes made impassable by rising waters within 3-5 hours before hurricane centre arrives. Low-lying escape routes made impassable by rising water 3-5 hours before hurricane centre arrives. Complete destruction of mobile homes. Category 2Winds 154-176km/hour (83-95 knots). Category 3Winds 178-209km/hour (96-113 knots). This causes a rapid upward draught of moisture-laden air, which in turn produces huge volumes of condensation to form massive clouds.
Common topics in this essay:
Scale Category,
,
normal tide,
storm surge,
mobile homes,
low-lying escape routes,
routes impassable rising,
escape routes impassable,
impassable rising,
low-lying escape,
hurricane centre,
escape routes,
major damage,
trees blown,
routes impassable,
impassable rising water,
poorly constructed signs,
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Acceptance Essays
