Key date and landfall
Hurricane Katrina made landfall along the U.S. Gulf Coast on August 29, 2005. On that day, the storm struck southeastern Louisiana and Mississippi during a late-morning high tide, producing catastrophic storm surge, widespread levee failures in New Orleans, and extreme wind damage. The date is established in official records from NOAA, the National Hurricane Center, and post-storm assessments by federal agencies.
Timeline overview
The Katrina event spanned several days, with critical milestones before, during, and after landfall. Below is a concise timeline that places the main landfall date in context with the evolution of the event and the emergency response.
| Date or Period | Event | Why it matters |
|---|---|---|
| Aug 23, 2005 | Tropical Depression Twelve forms | Marks the start of the system that would become Katrina |
| Aug 25, 2005 | Makes first U.S. landfall in southern Florida | Organizes further; enters the Gulf of Mexico with stronger structure |
| Aug 28, 2005 | Rapid intensification; reaches Category 5 over the Gulf | Peak intensity informs forecasts and evacuation decisions |
| Aug 29, 2005 | Main Louisiana and Mississippi landfall | Catastrophic storm surge and levee failures cause widespread destruction |
| Aug 29–30, 2005 | Continued impacts in Louisiana, Mississippi, Alabama | Ongoing flooding, wind damage, and population displacement |
| Aug 31–early Sept, 2005 | Flooding in New Orleans; federal and state response escalates | Highlights long-term challenges in rescue, housing, and recovery |
Primary and secondary impacts
August 29, 2005, is the central date because it marks the moment of landfall and the onset of the most severe impacts. Storm surge overtopped levees, flooding approximately 80% of New Orleans and causing dozens of deaths in shelter locations. Hurricane-force winds extended outward, damaging homes and infrastructure across a broad region. In total, Katrina caused more than 1,800 fatalities and an estimated $125 billion in damage (2005 USD), making it one of the costliest storms on record.
Preparedness and forecasting context
Advance notice of Katrina’s track and intensity improved in the hours before landfall, but protection and evacuation systems still failed in critical areas. The date of landfall was well forecast several days in advance, which allowed for large-scale evacuations; nevertheless, barriers, pumps, and communication gaps contributed to disproportionate harm in underserved communities. Lessons from the event reshaped coastal building codes, floodplain management, and emergency planning across the Gulf Coast.
Long-term recovery and legacy
In the years following August 2005, New Orleans and other affected areas enacted major rebuilding strategies, updated flood protection, and reformed governance of disaster response. The date of Katrina’s landfall continues to inform risk models, community resilience programs, and federal policy on disasters. Modern monitoring tools, including improved satellite data and storm surge models, trace many of their advancements to lessons learned from this event.
Frequently asked questions
- When did Hurricane Katrina make landfall? August 29, 2005.
- Did Hurricane Katrina make landfall on the same date everywhere? No. It crossed south Florida on August 25 and made its primary Gulf Coast landfall on August 29.
- What is the most trusted source for the landfall date? Authoritative sources include NOAA, the National Hurricane Center, and post-storm reports from the U.S. Army Corps of Engineers.
- How can a single date capture such a complex event? August 29, 2005, represents the principal landfall and onset of catastrophic impacts, even though the overall event extended over many days.
Bottom line
Hurricane Katrina’s primary U.S. landfall occurred on August 29, 2005. This date is consistently documented in verified meteorological records and remains a reference point for understanding the storm’s impacts, preparedness reforms, and long-term recovery efforts across the Gulf region.