Hurricane Katrina made its second landfall as a Category 3 storm near Buras-Triumph, Louisiana, driving a storm surge that overwhelmed the levee system protecting New Orleans. Floodwaters submerged roughly 80% of the city, killed nearly 1,400 people along the Gulf Coast, and exposed catastrophic failures in disaster planning and infrastructure at every level of government.
The storm had weakened slightly from its Category 5 peak in the Gulf of Mexico, but its wind field was enormous, and the surge it pushed ashore was even more destructive than its winds. Levees along the Industrial Canal and 17th Street Canal failed within hours, sending walls of water into neighborhoods like the Lower Ninth Ward, where some residents drowned in their attics.
The federal response became a case study in institutional failure. FEMA director Michael Brown appeared unaware of conditions at the New Orleans Convention Center, where thousands of evacuees sheltered for days without adequate food, water, or medical care. Television images of stranded families on rooftops and bodies floating in floodwater shocked a nation and reshaped American politics for years.
Katrina caused over $125 billion in damage, making it one of the costliest natural disasters in U.S. history. It permanently altered New Orleans's demographics and racial composition, as many displaced Black residents never returned, and it left lasting scars on how Americans understood climate vulnerability and government competence.