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Source: CNN Online
• [all times Eastern Standard Time]: Katrina officially becomes a Category 1 hurricane, according to the
• 7 p.m.: Lumbering ashore in south Florida, Katrina causes nine deaths and kills power to more than 1.2 million people.
• : Despite being over land for more than four hours, Katrina's maximum sustained winds are still being clocked at 75 mph. It came ashore with 80 mph winds between
• : After weakening briefly to a tropical storm, Katrina regains hurricane status and moves on to the
• : The hurricane is upgraded to Category 2, with the storm's feeder bands continuing to pound the lower
• : The National Hurricane Center warns that Katrina is expected to reach dangerous Category 4 intensity before making landfall in
• : Katrina is upgraded to a Category 3, or major hurricane, with the
• During the day, residents of
• Highways leading out of
• 11 p.m.: The National Hurricane Center issues a hurricane warning from Morgan City, Louisiana, to the Alabama-Florida border, an area that includes New Orleans. A warning means that hurricane conditions are expected within the warning area within the next 24 hours.
• : Katrina escalates to Category 4 strength, heading for the
• : Hurricane Katrina intensifies to Category 5, the worst and highest category on the Saffir-Simpson scale.
• 10 a.m.: As Katrina hits 175 mph winds, New Orleans Mayor Ray Nagin orders mandatory evacuations as the storm seems to beat a direct path to the city.
• During the day, Bush declares a state of emergency in
• : Hurricane Katrina is downgraded to a strong Category 4 storm.
• : Katrina makes landfall on the
• Katrina makes another landfall near the Louisiana-Mississippi state line with 125 mph winds.
• The storm's daylong rampage claims lives and ravages property in Louisiana, Mississippi and Alabama, where coastal areas remained under several feet of water.
• Two major flood-control levees are breached, and the National Weather Service reports "total structural failure" in parts of
• 10 p.m.: More than 12 hours after making landfall, one of the most powerful hurricanes to hit the northern Gulf Coast in half a century is downgraded to a tropical storm. Remnants head north toward
• New Orleans is left with no power, no drinking water, dwindling food supplies, widespread looting, fires -- and steadily rising waters from major levee breaches. Efforts to limit the flooding are unsuccessful and force authorities to try evacuating the thousands of people at city shelters.
• Mississippi Gov. Haley Barbour says Katrina inflicted more damage to the state's beach towns than did Hurricane Camille, and its death toll is likely to be higher. In
• Katrina is downgraded to a tropical depression.
• President Bush flies over the
• The entire region is declared a public health emergency amid fears of diseases that could spread because of the contaminated, stagnant water.
• Evacuations from the Louisiana Superdome to the Houston Astrodome begin. About 20,000 people are expected to be transferred from
• When asked about the number of dead, New Orleans Mayor Ray Nagin replies, "Minimum, hundreds. Most likely, thousands."
• In flooded
• Violence disrupts relief efforts as authorities rescue trapped residents and try to evacuate thousands of others living among corpses and human waste. Those stranded express growing frustration with the disorder evident on the streets, raising questions about the coordination and timeliness of relief efforts.
• Homeland Security Secretary Michael Chertoff announces that 4,200 National Guard troops trained as military police will be deployed to New Orleans over the next three days. Louisiana Gov. Kathleen Blanco requests the mobilization of 40,000 National Guard troops.
• Gasoline prices spike as high as $5 a gallon in some areas as consumers fearing a gas shortage race to the pumps.
• Tired and angry people stranded at the convention center in New Orleans welcome a supply convoy carrying food, water and medicine.
• President Bush visits
• The U.S. Army Corps of Engineers estimate it will take 36 to 80 days to drain the city.
• Members of the Congressional Black Caucus criticize the pace of relief efforts, saying response was slow because those most affected are poor.
• While thousands of people waiting to be evacuated from the squalor of flood-stricken
• FEMA announces that 90,000 square miles were affected by Katrina, an area greater than the size of the
• Utility companies work to restore power to more than 1 million
• The Army Corps of Engineers brings in pumps and generators from around the nation to help get