California Threat Assessment
58 counties ranked by FEMA National Risk Index composite score.
| County | Threat Level | NRI Score | Rating |
|---|---|---|---|
| Los Angeles County | Critical | 100.0 | Very High |
| Riverside County | Critical | 58.9 | Very High |
| San Bernardino County | Critical | 54.4 | Very High |
| Santa Barbara County | Critical | 48.2 | Very High |
| Imperial County | Critical | 43.8 | Very High |
| San Diego County | Critical | 43.1 | Very High |
| Alameda County | Critical | 40.4 | Relatively High |
| Orange County | Critical | 39.1 | Relatively High |
| Sacramento County | Critical | 37.6 | Relatively High |
| Sonoma County | Critical | 37.4 | Relatively High |
| Fresno County | Critical | 36.5 | Relatively High |
| Butte County | Critical | 36.0 | Relatively High |
| Glenn County | Critical | 35.5 | Relatively High |
| Colusa County | Critical | 34.5 | Relatively High |
| Sutter County | Critical | 34.4 | Relatively High |
| Monterey County | Critical | 33.5 | Relatively High |
| Merced County | Critical | 33.3 | Relatively High |
| San Francisco County | Critical | 33.3 | Relatively High |
| Napa County | Critical | 32.4 | Relatively High |
| Yolo County | Critical | 32.0 | Relatively High |
| San Joaquin County | Critical | 31.5 | Relatively High |
| Kern County | Critical | 31.4 | Relatively High |
| Madera County | Critical | 31.2 | Relatively High |
| Ventura County | Critical | 29.4 | Relatively High |
| Contra Costa County | Critical | 29.3 | Relatively High |
| Stanislaus County | Critical | 29.1 | Relatively High |
| Solano County | Critical | 28.7 | Relatively High |
| Modoc County | Critical | 27.1 | Relatively High |
| Mendocino County | Critical | 26.4 | Relatively High |
| Humboldt County | Critical | 26.2 | Relatively High |
| Shasta County | Critical | 26.0 | Relatively High |
| Lake County | Critical | 25.8 | Relatively High |
| Tehama County | Critical | 24.9 | Relatively High |
| Tulare County | Critical | 23.9 | Relatively High |
| Siskiyou County | Critical | 23.7 | Relatively High |
| Santa Clara County | Critical | 23.0 | Relatively High |
| San Mateo County | Critical | 22.8 | Relatively Moderate |
| Yuba County | Critical | 22.4 | Relatively Moderate |
| Santa Cruz County | Critical | 22.3 | Relatively Moderate |
| Kings County | Critical | 22.2 | Relatively Moderate |
| Tuolumne County | High | 22.1 | Relatively Moderate |
| Calaveras County | High | 18.7 | Relatively Moderate |
| San Benito County | High | 17.8 | Relatively Moderate |
| San Luis Obispo County | High | 17.4 | Relatively Moderate |
| Plumas County | High | 17.2 | Relatively Moderate |
| Mariposa County | High | 17.1 | Relatively Moderate |
| Nevada County | High | 17.1 | Relatively Moderate |
| Amador County | High | 15.6 | Relatively Moderate |
| Trinity County | High | 14.6 | Relatively Moderate |
| El Dorado County | High | 14.5 | Relatively Moderate |
| Del Norte County | High | 14.1 | Relatively Moderate |
| Placer County | High | 14.0 | Relatively Moderate |
| Marin County | Elevated | 12.2 | Relatively Low |
| Inyo County | Elevated | 11.2 | Relatively Low |
| Sierra County | Elevated | 11.0 | Relatively Low |
| Alpine County | Elevated | 10.2 | Relatively Low |
| Mono County | Elevated | 9.7 | Relatively Low |
| Lassen County | Guarded | 3.6 | Very Low |