Hurricane Katrina made landfall on August 29, 2005, a date that marks the point when the storm’s eyewox moved ashore and its most destructive forces reached coastal communities. On that morning near Buras, Louisiana, Katrina came ashore as a Category 3 hurricane, with sustained winds near 125 mph and a devastating storm surge that overwhelmed levees in New Orleans and surrounding parishes. This verified landfall date frames the sequence of impacts, emergency responses, and long-term recoveries that continue to inform disaster planning and risk communication today. Below is a fact-focused breakdown of the landfall timeline, related milestones, and why precise dating matters for public understanding.
Landfall Details and Verification
Landfall in meteorology is defined as the center of a tropical cyclone making contact with land. For Hurricane Katrina, this occurred on August 29, 2005, between approximately 6:00 and 9:00 AM local time near Buras, Louisiana, based on official post-storm analysis from the National Hurricane Center. Wind estimates at landfall were around 125 mph, with the central pressure near 920 mb. The storm then crossed into Lake Pontchartrain, with the northern eyewall producing extreme damage in New Orleans. Clarifying this specific date separates the meteorological event from related phases, such as pre-impact watches and warnings, and from the subsequent, separate landfall on the following day.
August 28 Watches and Warnings Timeline
In the 48 hours before Katrina’s landfall, the National Hurricane Center issued watches and warnings that framed public and official preparations. These alerts communicated where damaging winds, storm surge, and flooding were expected, enabling evacuations that reduced exposure in many jurisdictions. Accurate timing of these warnings is essential for evaluating response effectiveness and understanding how lead times influence outcomes. The official timeline distinguishes between early alerts and the definitive landfall event itself.
Pre-Landfall Watches (August 27)
- Hurricane Watch issued at 11:00 AM CDT, covering areas from the Florida–Alabama border to the mouth of the Pearl River.
- Hurricane Warning issued at 10:00 AM CDT on August 28, expanding coverage to include New Orleans and surrounding parishes.
Pre-Landfall Evacuation Milestones
- New Orleans began voluntary evacuations on August 26, with mandatory evacuations ordered by August 28.
- Shelters were activated on August 27, though many remained under-occupied due to access and timing constraints.
Landfall Comparison Table
The table below clarifies key attributes related to Hurricane Katrina’s landfall, providing a concise reference for dates, measured values, and their significance.
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Landfall Date | August 29, 2005 | Official post-season report |
| Landfall Location | Near Buras, Louisiana | National Hurricane Center |
| Sustained Wind Speed at Landfall | 125 mph (Category 3) | Reconnaissance and post-analysis |
| Central Pressure at Landfall | 920 mb | Post-storm best track |
| Second U.S. Landfall | August 30, 2005, near the Louisiana–Mississippi border | Official post-season report |
Post-Landfall Progression
After the initial landfall on August 29, Katrina’s center moved north-northeast across southeastern Louisiana and into Mississippi, with a second landfall occurring on August 30 near the Louisiana–Mississippi border. Between these landfalls, the storm’s immense size and embedded thunderstorms produced catastrophic flooding in New Orleans due to levee and floodwall failures. The post-landfall phase included rapid weakening over land, but not before widespread, long-duration flooding shaped the region’s recovery trajectory. Understanding this progression helps explain why certain locations experienced different hazards, such as wind versus water, and why response timelines varied across jurisdictions.
Why the Landfall Date Matters
The specific date of August 29, 2005, anchors analyses of the event in operational, social, and historical contexts. For emergency management, it marks the transition from forecast and preparation phases to response and recovery, informing metrics such as evacuation timelines, shelter capacity, and deployment of emergency resources. For the public and researchers, it enables consistent comparison with other hurricanes, clearer communication about impacts, and more accurate historical records. Precise dating also supports long-term studies of coastal risk, insurance, and infrastructure resilience.
Summary of Key Dates
Hurricane Katrina’s timeline can be summarized through several verified dates that frame the event from early warnings to final landfall and aftermath. These dates are not interchangeable; each represents a distinct phase with different decision points and consequences. The following list captures the essential chronological anchors for understanding the event’s duration and impact.
- August 23–26: Early storm organization; watches begin as the system moves toward the Gulf of Mexico.
- August 26–28: Large-scale evacuations across the Gulf Coast; emergency plans activated.
- August 29: Landfall near Buras, Louisiana; severe storm surge affects New Orleans and surrounding areas.
- August 30: Second landfall near the Louisiana–Mississippi border; widespread flooding continues.
- August 31 and beyond: Gradual weakening, rescue operations, and onset of recovery and rebuilding phases.
Conclusion
Hurricane Katrina made landfall on August 29, 2005, a date that remains central to understanding the storm’s meteorological characteristics, impacts, and response timelines. Verifiable data, including landfall location, wind speed, pressure, and the sequence of related dates, support clear communication and effective risk education. By relying on authoritative sources and precise timing, this explanation offers a durable foundation for discussing the event’s legacy and its ongoing relevance to disaster preparedness.