Katrina (Hurricane Katrina)

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Katrina (Hurricane Katrina) was a powerful and destructive 2005 Atlantic hurricane major hurricane that struck the Gulf Coast of the United States in late August 2005. It caused catastrophic damage across Louisiana, Mississippi, and Alabama, precipitating a humanitarian crisis in New Orleans, prompting national responses from the Federal Emergency Management Agency, the United States Department of Defense, and drawing attention from international actors such as United Nations agencies. The storm's effects catalyzed investigations by bodies including the United States Congress, the FEMA oversight committees, and the National Hurricane Center.

Background and meteorological history

Katrina developed from a tropical wave near the western coast of Africa and was monitored by the National Hurricane Center after formation in the eastern Caribbean Sea, passing near Jamaica, the Cayman Islands, and the northwestern Cuba coast before intensifying in the Gulf of Mexico, interacting with a warm Loop Current eddy and high sea surface temperatures that favored rapid intensification to a Category 5 by the Saffir–Simpson scale; notable observations were documented by the NOAA and NASA satellite assets. Forecasting models used by the National Weather Service and the European Centre for Medium-Range Weather Forecasts diverged on landfall location, but operational advisories placed potential impacts on Louisiana, Mississippi, and Alabama coasts; reconnaissance missions launched by the Air Force Reserve Hurricane Hunters and the NOAA P-3 aircraft provided in situ wind and pressure data that recorded a minimum central pressure near 902 mbar.

State and local officials including Kathleen Blanco, governor of Louisiana, and Jeb officials coordinated with the Federal Aviation Administration, Department of Homeland Security, and municipal emergency managers in issuing evacuation orders, shelter activations, and transport plans; the New Orleans Mayor's Office and Mayor Ray Nagin advised mandatory evacuations for vulnerable parishes and engaged the Louisiana National Guard and Amtrak for movement of evacuees. The National Hurricane Center issued hurricane warnings and watches that prompted responses from American Red Cross, Salvation Army, and international aid organizations such as Médecins Sans Frontières in readiness. Controversies arose over the adequacy of evacuation plans for institutions including Tulane University, Louisiana Superdome, and long-term care facilities; structural preparations involved coordination with the United States Army Corps of Engineers on flood protection systems and levee integrity.

Katrina produced storm surge, wind damage, and inland flooding that devastated communities including Biloxi, Mississippi, Gulfport, Mississippi, Slidell, Louisiana, and the metropolitan New Orleans area; infrastructure damage affected ports such as the Port of New Orleans, oil production platforms linked to BP (company), ExxonMobil, and Shell plc, and disrupted supply chains involving United Parcel Service, FedEx, and major retailers like Wal-Mart. The human toll included tens of thousands displaced into shelters run by FEMA, American Red Cross, and regional nonprofit networks; hospitals such as Charity Hospital (New Orleans) and Ochsner Health System evacuated patients. Cultural losses affected institutions like the New Orleans Museum of Art, Mardi Gras World, and music venues tied to artists including Trombone Shorty, Fats Domino, and the Preservation Hall Jazz Band.

Following landfall, breaches occurred in multiple sections of the New Orleans Hurricane Protection System engineered by the United States Army Corps of Engineers, flooding roughly 80% of New Orleans; levee failures in the London Avenue Canal, Industrial Canal, and 17th Street Canal led to catastrophic inundation of neighborhoods such as the Lower Ninth Ward, Gentilly, and St. Bernard Parish. Investigations by the American Society of Civil Engineers, the National Research Council (United States), and congressional committees examined design, construction, maintenance, and oversight involving contractors and consulting firms, as well as engineering reports from WJE and academic studies from Tulane University and Loyola University New Orleans.

Immediate responses involved deployments from the United States National Guard, United States Navy, United States Coast Guard, and volunteer networks coordinated with FEMA and nongovernmental organizations including the Red Cross (USA), Teams of Volunteers, and faith-based groups like Catholic Charities USA and The Salvation Army (USA). Long-term recovery initiatives involved federal programs like the Road Home Program, funding from the United States Congress through supplemental appropriations, urban planning efforts by the Greater New Orleans Urban Planning Commission, and reconstruction projects involving HUD and private firms; housing initiatives engaged stakeholders such as Entergy New Orleans and community organizations including Common Ground Relief and the Make It Right Foundation led by Brad Pitt.

Katrina damaged coastal wetlands, barrier islands, and ecosystems near the Mississippi River Delta, affecting species protected under laws administered by the United States Fish and Wildlife Service and escalating concerns addressed by the Environmental Protection Agency about contamination from industrial sites and Superfund locations including remediation priorities and impacts on fisheries regulated by the National Oceanic and Atmospheric Administration and the Gulf of Mexico Fishery Management Council. Economic impacts included losses to the energy industry, with disruptions to production for companies such as Chevron Corporation and consequences for global oil markets monitored by organizations like the International Energy Agency, while tourism declines affected entities such as Harrah's New Orleans and the local hospitality sector coordinated with the New Orleans Tourism Marketing Corporation.

The federal, state, and local responses prompted inquiries by the United States Congress, oversight by the Government Accountability Office, and criminal and civil investigations led by the United States Department of Justice and state attorneys general; litigation involved municipalities, contractors, and the United States Army Corps of Engineers, with significant cases considered in federal courts and settlements addressing property claims and insurance disputes with entities like State Farm and Allstate. Political ramifications influenced the administrations of George W. Bush and state leadership such as Kathleen Blanco and shaped policy reforms in disaster management, including amendments to FEMA policies and proposals debated in the United States Senate and United States House of Representatives.