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California

Comprehensive climate risk and disaster history profile

35
Billion-Dollar Events
$244.9B
Total Economic Impact
58
Counties
90.59
Avg Risk Score

Top Natural Hazards

Based on FEMA National Risk Index data across all 58 counties

Earthquake
95.98 Avg Risk Score
Drought
92.3 Avg Risk Score
Wildfire
92.12 Avg Risk Score
Landslide
84.54 Avg Risk Score
Riverine Flooding
78.58 Avg Risk Score
Heat Wave
76.49 Avg Risk Score
Tsunami
57.77 Avg Risk Score
Coastal Flooding
56.38 Avg Risk Score

Disaster Type Breakdown

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

wildfire 17 events
$158.7B
drought 10 events
$71.7B
flooding 5 events
$11.1B
severe-storm 2 events
$2.1B
freeze 1 events
$1.4B

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 Very High 86.3%
2 Riverside 99.94 Very High 82.0%
3 San Bernardino 99.9 Very High 88.6%
4 Alameda 99.87 Very High 51.3%
5 Santa Clara 99.84 Very High 36.1%
6 Orange 99.78 Very High 56.9%
7 San Diego 99.68 Very High 70.6%
8 Contra Costa 99.59 Very High 47.9%
9 Ventura 99.43 Relatively High 62.5%
10 Santa Barbara 99.4 Relatively High 86.7%

Recent Major Events

Most costly billion-dollar disasters in the past 10 years

California Earthquake Risk

Historical earthquake data and seismic risk information

30 Significant Earthquakes
$54.11B Total Economic Loss
3456 Total Fatalities

Major Historical Earthquakes

1994 Northridge Earthquake
M6.7 $40.0B
1989 Loma Prieta Earthquake
M6.9 $6.0B
2019 Ridgecrest Earthquake
M7.1 $5.3B
2014 California Earthquake (M6.0)
M6.0 $0.62B
1906 San Francisco Earthquake
M7.8 $0.52B

Risk Factors

  • Located on the Pacific Ring of Fire
  • San Andreas Fault runs through the state
  • High population density in seismic zones
  • Building codes updated after major earthquakes
  • 30 significant earthquakes recorded since 1812

Explore California Risk Data

Get personalized insights for your location within California

Disaster Analysis Assistant

Hello! I'm your disaster analysis assistant. I can help you understand disaster trends, analyze risk data, and answer questions about weather and climate disasters. How can I help you today?