Louisiana

Comprehensive climate risk and disaster history profile

Billion-Dollar Events

$535.7B

Total Economic Impact

Counties

69.33

Avg Risk Score

Top Natural Hazards

Based on FEMA National Risk Index data across all 64 counties

Hurricane

79.53 Avg Risk Score

Riverine 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

64.77 Avg Risk Score

Coastal Flooding

63.95 Avg Risk Score

Cold Wave

61.48 Avg Risk Score

Historical billion-dollar events by category (1980-2024)

severe-storm 35 events

$61.4B

tropical-cyclone 23 events

$366.7B

flooding 9 events

$28.5B

drought 9 events

$51.4B

winter-storm 5 events

$27.7B

How disaster frequency and costs have changed over time

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	Relatively High	84.6%
2	Jefferson	98.15	Relatively High	83.0%
3	Lafayette	97.96	Relatively High	73.5%
4	St. Tammany	97.8	Relatively High	48.7%
5	Orleans	96.98	Relatively High	83.8%
6	Calcasieu	96.91	Relatively High	71.5%
7	Livingston	96.85	Relatively High	47.1%
8	Terrebonne	96.37	Relatively High	78.2%
9	Ascension	96.28	Relatively High	38.4%
10	Tangipahoa	96.15	Relatively High	86.5%