Formation. Issues. and management.

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  • Created by: Ellie
  • Created on: 27-05-12 11:16


  • Hurricanes are intense low presure weather systems that build up energy from the temperature of the ocean. 
  • They form in tropical regions where water temperatures are at least 27 degrees.
  • To form, they need low pressure and moist air.
  • Trade winds cause the storm to rotate in an anti-clockwise direction.
  • Warm air from thunderstorms and the ocean surface begin to rise causing LOW PRESSURE.
  • The warm air rises faster and faster, encouraging more warm air to be sucked up into the storm. This also causes cooler, drier air to be sucked down 
  • As the hurricane moves across the ocean, it picks up more moisture and increases its speed. 
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Primary Effects.

  • Strong winds causing structural damage. These wind can also roll cars, blow over trees and erode beaches. 
  • A sudden change in pressure can cause buildings to explode, or other buildings to be sucked up by the winds. 
  • biggest hazard is flying debris.
  • Heavy raainfall is another effect. Hurricanes can bring large amounts of rainfallin just one day. It can cause inland flooding and can totally devastate large areas..
  • Heavy rainfall can also cause mass movements such as landslides, mudslides and debris flows. 
  • Water seepage into buildings may result in their collapse from the weight of the absorbed water. 
  • Storm surges can also occur, cuased by prevailing winds pushing a wall of water from the coastline. As a result, this can cause significant inland flooding and beach erosion. The low pressure pushes up the sea surface. 
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Secondary Effects.

  • Flooding.
  • Homlessness.
  • Spread of disease.
  • Economic damage.
  • job loss.
  • Death. 
  • No transport links.
  • Infrastructural damage.
  • No clean water. 
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  • Tracking Hurricanes. The National Hurricane Centre in Floridatracks th development of hurricanes over certain areas. 
  • Forecasting with special computers. 
  • Warning is issued when the wids are greater than 74 miles or seas are dangerously high with rough waters.
  • Announcements, radio broadcasts and television reports. 
  • Hurricanes can be predicted for certain times so goves time to prepare. 
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