An extreme weather event; causes, effects on
different groups of people and responses to the
hazard
Effects on People
people sought refuge in
the Superdome stadium
Conditions were unhygienic, and there was a
shortage of food and water.
1 million people were made
homeless.
about 1200 people drowned in the floods.
oil facilities were damaged as a a result
petrol prices rose in the UK and USA
1,500 deaths in the states of
Louisiana, Mississippi and
Florida
Costs of about $300 billion
Thousands of jobs lost and
millions and millions of dollars in
lost tax incomes
Agricultural production was
damaged by flooding. cotton and
sugar-cane crops were flattened
Responses
There was much criticism of
the authorities for their
handling of the disaster.
Although many people
were evacuated, it was a
slow process and the
poorest and most
vulnerable were left behind
$50 billion in aid was given by the
government
The UK government sent food aid during
the early stages of the recovery process
The National Guard was mobilised to restore and
maintain law and order in what became a hostile
and unsafe living environment
How Hurricanes Form.
Hurricanes need a lot of heat and a sea
surface temperature (at least 26 degrees) to
form.
Explaining why they usually occur over tropical seas.
They also need to be between 5 and 20
degrees north or south of the equator.
Formation of a Hurricane
1. warm air rises
quickly, causing
towering clouds,
heavy rainfall and
intense low pressure
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. the cloud brings
heavy rain, thunder
and lightening.
4. in the centre is the
eye of the
hurricane
5. often there will be no cloud
in the eye and much calmer
conditions.
6. the eye is formed because this is
the only part of the hurricane where
air is sinking.
Facts
Katrina was a catagory 4 storm
storm surges reached over 6
metres in height
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
Despite an evacuation order, many of the
poorest people remained in the city