LA
Louisiana
Comprehensive climate risk and disaster history profile
74
Billion-Dollar Events
$112.7B
Total Economic Impact
64
Counties
69.33
Avg Risk Score
Top Natural Hazards
Based on FEMA National Risk Index data across all 64 counties
Tropical Cyclone
79.53
Avg Risk Score
Flooding
75.78
Avg Risk Score
Heat Wave
70.93
Avg Risk Score
Lightning
67.33
Avg Risk Score
Tornado
66.62
Avg Risk Score
Drought
62.74
Avg Risk Score
Disaster Type Breakdown
Historical billion-dollar events by category (1980-2024)
Severe Storm
33 events
$9.1B
Tropical Cyclone
21 events
$83.2B
Flooding
8 events
$13.5B
Drought
7 events
$4.7B
Winter Storm
5 events
$2.2B
Disaster Trends by Decade
How disaster frequency and costs have changed over time
Highest Risk Counties
Counties with the highest overall risk scores based on FEMA NRI
| Rank | County | Risk Score | Risk Rating | SVI Percentile |
|---|---|---|---|---|
| 1 | East Baton Rouge | 98.89 | 8027.0% | |
| 2 | Jefferson | 98.15 | 7985.0% | |
| 3 | Lafayette | 97.96 | 7447.0% | |
| 4 | St. Tammany | 97.8 | 4510.0% | |
| 5 | Orleans | 96.98 | 8329.0% | |
| 6 | Calcasieu | 96.91 | 7097.0% | |
| 7 | Livingston | 96.85 | 4437.0% | |
| 8 | Terrebonne | 96.37 | 8600.0% | |
| 9 | Ascension | 96.28 | 3253.0% | |
| 10 | Tangipahoa | 96.15 | 8905.0% |
Recent Major Events
Most costly billion-dollar disasters in the past 10 years
Severe Storm
May 2025
$0.3B
Tropical Cyclone
Sep 2024
$0.4B
Tropical Cyclone
Jul 2024
$2.4B
15 fatalities
Severe Storm
May 2024
$0.4B
2 fatalities
Severe Storm
May 2024
$0.4B
Severe Storm
Apr 2024
$0.4B
Severe Storm
Feb 2024
$0.2B
Severe Storm
Jun 2023
$0.4B
Severe Storm
Apr 2023
$0.2B
Drought
Apr 2023
$1.4B
24 fatalities
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