Hurricane Katrina

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Hurricane Katrina
1 An extreme weather event; causes, effects on different groups of people and responses to the hazard
1.1 Effects on People
1.1.1 people sought refuge in the Superdome stadium
1.1.2 Conditions were unhygienic, and there was a shortage of food and water.
1.1.3 1 million people were made homeless.
1.1.4 about 1200 people drowned in the floods.
1.1.5 oil facilities were damaged as a a result petrol prices rose in the UK and USA
1.1.6 1,500 deaths in the states of Louisiana, Mississippi and Florida
1.1.7 Costs of about $300 billion
1.1.8 Thousands of jobs lost and millions and millions of dollars in lost tax incomes
1.1.9 Agricultural production was damaged by flooding. cotton and sugar-cane crops were flattened
1.2 Responses
1.2.1 There was much criticism of the authorities for their handling of the disaster.
1.2.2 Although many people were evacuated, it was a slow process and the poorest and most vulnerable were left behind
1.2.3 $50 billion in aid was given by the government
1.2.4 The UK government sent food aid during the early stages of the recovery process
1.2.5 The National Guard was mobilised to restore and maintain law and order in what became a hostile and unsafe living environment
2 How Hurricanes Form.
2.1 Hurricanes need a lot of heat and a sea surface temperature (at least 26 degrees) to form.
2.1.1 Explaining why they usually occur over tropical seas.
2.2 They also need to be between 5 and 20 degrees north or south of the equator.
3 Formation of a Hurricane
3.1 1. warm air rises quickly, causing towering clouds, heavy rainfall and intense low pressure
3.2 2. the low pressure sucks in air, causing very strong winds which spiral - anti-clockwise in the northern hemisphere - around the centre of the low, at speeds of around 120km/h (75mph)
3.3 3. the cloud brings heavy rain, thunder and lightening.
3.4 4. in the centre is the eye of the hurricane
3.5 5. often there will be no cloud in the eye and much calmer conditions.
3.6 6. the eye is formed because this is the only part of the hurricane where air is sinking.
4 Facts
4.1 Katrina was a catagory 4 storm
4.2 storm surges reached over 6 metres in height
4.3 New Orleans was one of the worst affected areas because it is below sea level and protected levees. the defences were unable to cope with the strength of Katrina
4.4 Despite an evacuation order, many of the poorest people remained in the city