This week marks 20 years since Hurricane Katrina, the catastrophic storm that devastated New Orleans and reshaped America’s understanding of natural disasters and emergency response.

Katrina made landfall in southeast Louisiana on August 29, 2005, as a Category 3 hurricane, unleashing destruction that still resonates today. According to the National Oceanic and Atmospheric Administration (NOAA), the storm remains the costliest in U.S. history, with damage estimated at more than $200 billion when adjusted for inflation.

The human toll was staggering. About 1,400 people lost their lives across five states, with Louisiana bearing the brunt of the tragedy. In New Orleans, the failure of the federal levee system inundated nearly 80% of the city, submerging neighborhoods for weeks. Thousands of residents clung to rooftops awaiting rescue, while others endured dire conditions in the overcrowded and under-supplied Superdome stadium.

Katrina’s aftermath exposed deep flaws in disaster preparedness, federal response, and infrastructure resilience, sparking nationwide debates on climate change, poverty, and racial inequality. Two decades later, the lessons of Katrina continue to influence U.S. disaster policy and urban planning.

As New Orleans commemorates this somber anniversary, survivors and officials alike stress the importance of remembrance—not only for those lost, but also to ensure that such devastation is never repeated.