Hurricane Katrina struck the Gulf Coast on August 29, 2005, leaving a path of destruction that reshaped cities, policies, and lives. Understanding the precise date for Hurricane Katrina and the surrounding context helps clarify how the storm evolved and why its impact remains studied years later.
Below is a detailed overview that combines a quick reference table with focused sections on formation, landfall, and aftermath to give you a clear, scannable picture of this historic event.
| Event | Date (UTC) | Location | Key Status |
|---|---|---|---|
| Tropical Depression forms | August 23, 2005, 12:00 | Bahamas southeast of Nassau | Investigation and initial organization begin |
| Becomes Tropical Storm Katrina | August 24, 2005, 06:00 | East of Florida | Named, begins organized convection |
| Hurricane Katrina makes first U.S. landfall | August 25, 2005, 19:30 | Miami-Dade County, Florida | Category 1, brief land interaction, minor damage |
| Rapid intensification in Gulf | August 27–28, 2005 | Central Gulf of Mexico | Strengthens to Category 5, peak winds 175 mph |
| Final U.S. landfall | August 29, 2005, 11:10 | Buras-Triumph, Louisiana | Category 3, catastrophic storm surge and levee failure in New Orleans |
| Dissipation | i>August 31, 2005, 00:00 | Arkansas region | Merges with frontal boundary over Tennessee Valley |
Formation and Early Development
The date for Hurricane Katrina's genesis is anchored to August 23, 2005, when a tropical wave merged with a pre-existing disturbance in the Bahamas. Warm sea surface temperatures and light upper-level winds allowed the system to organize quickly.
By August 24, the National Hurricane Center designated the disturbance as Tropical Storm Katrina, noting a well-defined circulation and banding features. Tracking west-northwest, the storm moved toward southern Florida with steadily increasing confidence in the forecast path.
Intensification in the Gulf of Mexico
After crossing Florida, Katrina entered the warm waters of the Gulf of Mexico, a critical ingredient for rapid intensification. An upper-level anticyclone aloft provided favorable outflow, enabling the storm to explode in strength.
Between August 27 and August 28, Katrina reached Category 5 status on the Saffir-Simpson Hurricane Wind Scale, with maximum sustained winds near 175 mph and a minimum central pressure around 902 mb. This phase underscored the importance of real-time monitoring and forecast communication.
Final Landfall and Devastating Impacts
On August 29, Hurricane Katrina made its final landfall near Buras-Triumph, Louisiana, with estimated winds of 125 mph, still a strong Category 3. The most catastrophic damage came from storm surge, which overwhelmed levees in New Orleans and caused widespread flooding.
Communities across Mississippi and Louisiana experienced extreme wind damage, tornadoes, and infrastructure collapse. The storm's slow movement and immense size prolonged rain and surge, amplifying humanitarian, economic, and environmental consequences.
Meteorological Details and Forecast Evolution
Analysis of the date for Hurricane Katrina reveals how forecast models initially underestimated the eventual intensity but correctly highlighted the Gulf Coast threat. Ensemble guidance showed a range of possible tracks, yet the general northward into Louisiana persisted.
The National Hurricane Center's public advisories played a key role in prompting evacuations, despite challenges in communicating storm surge risks. Post-storm reviews emphasized the need for improved storm surge modeling and clearer evacuation orders.
Recovery Timeline and Long-term Effects
The timeline following the August 29 landfall extended for months and years, with the date for Hurricane Katrina marking the start of a complex recovery. Federal, state, and local agencies coordinated massive relief efforts, while communities rebuilt housing, infrastructure, and ecosystems.
Long-term impacts included population shifts, changes in insurance practices, and strengthened building codes. Scientific studies continue to examine how such storms may behave differently in a changing climate, reinforcing the importance of historical data like Katrina's timeline.
Key Takeaways on the Date for Hurricane Katrina
- Tropical depression formation: August 23, 2005
- Named as Tropical Storm Katrina: August 24, 2005
- First U.S. landfall (Florida): August 25, 2005
- Reached Category 5 intensity: August 28, 2005
- Final Louisiana landfall: August 29, 2005
- Dissipation: August 31, 2005
- Major impacts driven by storm surge and levee failures
- Long recovery and lasting policy changes in flood protection
FAQ
Reader questions
What specific date did Hurricane Katrina make landfall in Louisiana?
Hurricane Katrina made final landfall in Louisiana on August 29, 2005, at approximately 11:10 UTC, near Buras-Triumph, as a Category 3 hurricane.
When did Katrina reach its peak intensity as a Category 5 hurricane?
Katrina reached Category 5 status on August 28, 2005, with peak sustained winds of 175 mph and a central pressure near 902 mb while located over the central Gulf of Mexico.
When did the storm first receive the name Katrina?
The system was named Tropical Storm Katrina on August 24, 2005, after consolidating its circulation and convective bands east of Florida.
When did Hurricane Katrina fully dissipate after making landfall?
Hurricane Katrina dissipated around August 31, 2005, as it merged with a frontal boundary over the Tennessee Valley, though its remnants influenced weather across the eastern United States.