CA
California
Comprehensive climate risk and disaster history profile
40
Billion-Dollar Events
$144.6B
Total Economic Impact
58
Counties
90.59
Avg Risk Score
Top Natural Hazards
Based on FEMA National Risk Index data across all 58 counties
ERQK
95.98
Avg Risk Score
Wildfire
92.12
Avg Risk Score
Drought
87.53
Avg Risk Score
LNDS
84.54
Avg Risk Score
Flooding
78.58
Avg Risk Score
Heat Wave
76.49
Avg Risk Score
Disaster Type Breakdown
Historical billion-dollar events by category (1980-2024)
Wildfire
17 events
$111.3B
Drought
10 events
$14.5B
Flooding
6 events
$9.9B
Severe Storm
4 events
$1.5B
Freeze
3 events
$7.3B
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 | Los Angeles | 100.0 | 8584.0% | |
| 2 | Riverside | 99.94 | 8297.0% | |
| 3 | San Bernardino | 99.9 | 9058.0% | |
| 4 | Alameda | 99.87 | 5150.0% | |
| 5 | Santa Clara | 99.84 | 3714.0% | |
| 6 | Orange | 99.78 | 5621.0% | |
| 7 | San Diego | 99.68 | 6989.0% | |
| 8 | Contra Costa | 99.59 | 4736.0% | |
| 9 | Ventura | 99.43 | 6073.0% | |
| 10 | Santa Barbara | 99.4 | 8364.0% |
Recent Major Events
Most costly billion-dollar disasters in the past 10 years
Wildfire
Jan 2025
$60.0B
30 fatalities
Flooding
Dec 2022
$4.5B
22 fatalities
Wildfire
Apr 2022
$0.5B
2 fatalities
Drought
Jan 2022
$3.5B
22 fatalities
Wildfire
Jun 2021
$1.5B
1 fatalities
Flooding
Jan 2021
$0.6B
1 fatalities
Drought
Jan 2021
$2.8B
76 fatalities
Wildfire
Aug 2020
$4.1B
11 fatalities
Wildfire
Jun 2019
$2.2B
1 fatalities
Wildfire
Jun 2018
$24.0B
106 fatalities
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