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GCSE Geography Case Studies > Hurricane Katrina > Flashcards

Flashcards in Hurricane Katrina Deck (49)
1

How much did hurricane katrina cost USA?

$200 billion

2

How large was the area it affected?

90,000 square miles

3

How many times did it make landfall?

3

4

Which part of USA was most notably affected by katrina?

New Orleans

5

Where did katrina form?

About 200 miles south east of the Bahamas

6

When did katrina form?

23rd August 2005

7

What did katrina form as?

A tropical depression

8

Name 3 features of a tropical depression

•low pressure system
•thunderstorms
•wind speed between 25-35mph

9

How hot was the ocean when katrina formed?

26.5*C

10

What type of winds spiralled into the storm? Why was this?

Trade winds spiralled into the storm due to the rotation of the earth

11

What are trade winds?

Wind blowing towards the equator

12

Which tropic was katrina formed close to?

The Tropic of Cancer

13

What formed the storm clouds?

Evaporated ocean water, warming and rising

14

Why were trade winds absorbing moisture from the ocean?

Pressure was very low, sucking in air from the trade winds to spiralling winds that absorb moisture from the ocean

15

When did bands of storm clouds begin to wrap around the North side of the storms circulation centre?

Early morning hours of 24th of August

16

What were the constant wind speeds of katrina?

40mph

17

When did katrina hit Florida?

25th August

18

What happened when katrina hit Florida?

It strengthened and became a moderate category 1 hurricane

19

Name 2 impacts when katrina hit Florida

•flooding
•casualties

20

How many people died when katrina hit Florida?

2

21

What happened to katrina as it passed over land? Why?

It weakened because it lost its power source, the warm water as it is over land

22

Why did the storm intensify when back over the sea? When did this happen?

Moist air cools and condenses releasing energy

This happened on the 26th August 2005

23

When did katrina become a category 5 hurricane?

28th August 2005

24

How fast were winds blowing when katrina was at its peak?

175mph

25

What was the pressure when katrina was at its peak?

902mb

26

When did katrina hit New Orleans?

6.10am on 29th August 2005

27

Where in New Orleans did katrina hit?

The eastern edge

28

What category hurricane was katrina when it hit New Orleans?

Category 3

29

What scale measures the intensity of hurricanes?

Saffir Simpson

30

What is the nhc?

National hurricane centre

31

What did the nhc do?

Tracked the storm and issued warnings

32

What does USA have to track hurricanes?

Sophisticated monitoring systems like satellites and hunter planes which fly into storms

33

How did US coast guards make preparations?

•called in reserves
•recalled aircraft to base

34

When did president bush declare state emergency?

27th August 2005

35

What did the national weather service do?

Predict devastating damage on 28th August

36

When were evacuation orders given out to New Orleans? For how many people?

28th August for 1.2 million people

37

How many people per hour evacuated New Orleans?

18,000 per hour

38

Where were emergency centres set up for those who couldn't/chose not to evacuate?

Louisiana superdome

39

Name 6 primary impacts of hurricane katrina

•125mph winds up to 120 miles from the centre of the storm

•heavy rain: 250mm

•3 million lost electricity

•housing was flooded

•roads damaged

•2 major bridges collapsed

40

Name Secondary impacts

•1836 died of drowning

•public transport out of action

41

Why was response more difficult?

Widespread flooding

42

Why was there an increased risk of disease?

The water supply was contaminated and many were stranded with no food or water

43

How did volunteers help?

•provide emergency housing

44

How many people were rescued in total? Who by?

50,000 by air, police, helicopter and army

45

How many national guard helped preserve law and order, rescue and clean up?

58,000

46

How much money was authorised for aid victims by U.S. Government?

$62 billion

47

What were provided to live in?

Caravans

48

How many countries pledged financial aid to USA?

70

49

What plans were put in place after katrina?

Plans to strengthen flood defences in New Orleans