Hurricane Katrina Flashcards
(49 cards)
How much did hurricane katrina cost USA?
$200 billion
How large was the area it affected?
90,000 square miles
How many times did it make landfall?
3
Which part of USA was most notably affected by katrina?
New Orleans
Where did katrina form?
About 200 miles south east of the Bahamas
When did katrina form?
23rd August 2005
What did katrina form as?
A tropical depression
Name 3 features of a tropical depression
- low pressure system
- thunderstorms
- wind speed between 25-35mph
How hot was the ocean when katrina formed?
26.5*C
What type of winds spiralled into the storm? Why was this?
Trade winds spiralled into the storm due to the rotation of the earth
What are trade winds?
Wind blowing towards the equator
Which tropic was katrina formed close to?
The Tropic of Cancer
What formed the storm clouds?
Evaporated ocean water, warming and rising
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
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
What were the constant wind speeds of katrina?
40mph
When did katrina hit Florida?
25th August
What happened when katrina hit Florida?
It strengthened and became a moderate category 1 hurricane
Name 2 impacts when katrina hit Florida
- flooding
* casualties
How many people died when katrina hit Florida?
2
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
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
When did katrina become a category 5 hurricane?
28th August 2005
How fast were winds blowing when katrina was at its peak?
175mph
