Case Study: Hurricane Katrina 2005

  • Formation: 08/24/2005

    • Bahamas
    • Tropical depression 12
    • Swirling band of wind and rain picks up moisture and heat, increasing its speed
    • When winds reach 39 m/h, it becomes a tropical storm
    • Florida: hurricane warning announced
  • Category 1 Hurricane: 08/25/2005

    • By 4 o'clock: considered category 1 hurricane
    • Winds are 80 m/h
    • Enters Florida, passes through North Miami
    • By midnight, over 1,000,000 lose power
    • 11 lives are lost
  • Category 2 Hurricane

    • Goes North, in direction to Gulf of Mexico
    • Becomes category 2 hurricane
    • Locals try to save guard their properties
    • Louisiana and Mississippi are declared into states of emergency
  • Category 3 Hurricane

    • Winds reach 115 m/h
    • Becomes category 3 hurricane
    • In direction to New Orleans
    • Evacuation of New Orleans begins
    • Traffic jams in highways (18,000 cars per hour)
  • Category 4 & 5 Hurricane

    • Becomes category 4 hurricane
    • After a few hours, reaches category 5
    • Winds exceed 175 m/h
    • All residents in New Orleans ordered to evacuate
    • City sets up shelters for those who can't leave
    • Many locals stay in their homes
  • Becomes again a Category 4 Hurricane

    • Becomes a category 4 hurricane as winds lose speed.
    • Creates landfall at 6 am 60 miles southeast of New Orleans.
    • Winds reach a speed of 140 miles per hour and reach the coasts of Louisiana, Mississippi and Alabama.
    • The eye of the storm moves just east from New Orleans.
  • From Category 4 Hurricane to Tropical Storm

    • New Orleans; below sea level, surrounded by Lake Pontchartrin and the Mississippi River. Levees protect the city from flooding.
    • By 8 am, it is reported that a levee has broken, thus the waters from the lake flood the city.
    • 3 levees have been breached, 80% of the city becomes flooded. Some neighborhoods are submerged under 20 feet of water.
    • Nightfalls; Katrina slows to a tropical storm.
    • Hits North through Tennessee, into Kentucky.
  • Effects in Mississippi and New Orleans

    • Mississippi; hurricane has crushed various coastal towns. 100 feared dead.
    • New Orleans; left in shambles, without drinking water and power. Residents stranded on rooftops, waiting to be rescued. Bodies float on water, looting breaks out, thousands go to super dome and convention centre to be evacuated.
  • Effects pt2

    • Waters stop rising in New Orleans
    • Increase in violence & looting
  • Effects pt3

    • Unsafe conditions in rescue centres
    • Lack of food, water & basic sanitation
    • Still increase in violence
  • Effects pt4

    • National Guard restores order & brings basic needs
    • Evacuation begins