riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Modoc County Disaster Risk

Modoc County, California

FEMA Risk Rating

Very Low

National Percentile

40th

of 3,144 counties

State Rank

#56

of 58 (1 = highest risk)

Flood Risk

45th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 45% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Moderate

Higher than 93% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 1% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 69% of US counties

Risk Overview

About Natural Disaster Risk in Modoc County, California

Modoc: Well Below National Risk Average

Modoc County's composite risk score of 39.69 places it in the very low category—far safer than the typical American county. This score reflects a region where natural disaster hazards are substantially less pronounced than what most U.S. communities face.

Among California's Safest Counties

Modoc ranks among the lowest-risk counties in California, with a score well below the state average of 88.72. In a state known for seismic and wildfire hazards, Modoc stands out as a relative haven.

Safer Than the Sierra Nevada Region

Modoc's risk profile is notably lower than neighboring Mono County (46.50) and the higher-risk counties to the west and south. Its isolation in northeastern California keeps it away from the state's major seismic zones and populated fire corridors.

Wildfire and Earthquake Remain Top Concerns

Wildfire risk scores highest at 92.94, reflecting the county's forested terrain and dry climate, while earthquake risk sits at 68.77. Tornado and flood risks are minimal, with scores below 45.

Focus on Fire and Seismic Coverage

Even in low-risk Modoc, wildfire insurance and earthquake coverage are worth evaluating, especially for properties in forested areas. Standard homeowners policies may exclude earthquake damage, so check your policy for both fire and seismic protection.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Modoc County

Top Hazards by Exposure

  1. #1
    WildfirePrepare
    93th percentile
  2. #2
    EarthquakePrepare
    69th percentile
  3. #3
    FloodPrepare
    45th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Modoc County

Risk Verdict

Modoc County sits in the lower tier of U.S. counties for natural disaster exposure, ranked at the 40th percentile nationally. At the 40th percentile nationally, Modoc County's natural hazard profile is comparatively favorable — community resilience is reinforced when individual households maintain a reviewed emergency plan.

Hazard Breakdown

Wildfire risk is Modoc County's dominant natural hazard, ranked at the 93th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 69th percentile nationally. Additional tracked hazards include flood (45th percentile), tornado (1th percentile).

Preparedness Context

At the 93th percentile nationally for wildfire risk, Modoc County households benefit from creating defensible space — a buffer of reduced vegetation around structures — and reviewing whether homeowners insurance covers wildfire damage in this region. The county's earthquake exposure at the 69th percentile nationally complements the wildfire risk — saturating rain after burn scarring often triggers secondary flood and debris flow events. Enrolling in the county's wireless emergency alert system and keeping a vehicle at least half-full during peak fire season are low-cost habits that dramatically reduce evacuation lag time for Modoc County residents.

Regional Context

Modoc County falls 49.0 points below California's typical county risk level, making it one of the safer natural-hazard environments in the state.

Is your household prepared for Modoc County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Modoc County, CA?
Modoc County has a FEMA National Risk Index rating of Very Low, placing it in the 40th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Modoc County?
Modoc County is evaluated for five major natural hazard types: wildfire (93th percentile), earthquake (69th percentile), flooding (45th percentile), tornado (1th percentile). The highest-risk hazard is wildfire at the 93th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Modoc County risk compare to the California average?
Modoc County's composite risk percentile is 40th, compared to the California state average of 89th percentile. The state's overall risk rating is Relatively Moderate. This means Modoc County faces lower natural disaster risk than the typical county in California.
Is Modoc County at risk for wildfire?
Yes, Modoc County's wildfire risk is at the 93th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Modoc County is at the 45th percentile.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Is Modoc County a safe place to live?
Modoc County's composite risk score of 40th percentile is below the California state average of 89th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is wildfire at the 93th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.