riskbycounty
FEMA National Risk Index

Washoe County Disaster Risk

Washoe County, Nevada

FEMA Risk Rating

Relatively High

National Percentile

97th

of 3,144 counties

State Rank

#2

of 17 (1 = highest risk)

Flood Risk

95th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively High

Higher than 95% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively High

Higher than 99% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 14% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively High

Higher than 99% of US counties

Risk Advisory: Washoe County

Risk Verdict

Washoe County carries a relatively high overall disaster risk profile, scoring in the 97th percentile nationally. This places it among the most at-risk counties in the United States. Residents should prioritize comprehensive emergency preparedness, including reviewing insurance coverage and having an evacuation plan.

Hazard Breakdown

Earthquake risk is the dominant hazard for Washoe County, scoring in the 99th percentile nationally. It is followed by wildfire risk at the 99th percentile. Additional hazards include flood (95th), tornado (14th).

Preparedness Context

With earthquake risk as the top concern, Washoe County residents should secure heavy furniture and appliances, know how to shut off utilities, and keep emergency supplies accessible. Secondary risks such as wildfire also warrant attention in household and community preparedness planning. FEMA recommends all households maintain at least 72 hours of food, water, and medication supplies regardless of specific hazard exposure.

Regional Context

Washoe County is significantly riskier than the average county in Nevada. Its composite risk score is 50.4 points higher than the state average, meaning residents face above-average exposure to natural hazards compared to their neighbors.

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Frequently Asked Questions

What is the natural disaster risk in Washoe County, NV?
Washoe County has a FEMA National Risk Index rating of Relatively High, placing it in the 97th 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 Washoe County?
Washoe County is evaluated for five major natural hazard types: earthquake (99th percentile), wildfire (99th percentile), flooding (95th percentile), tornado (14th percentile). The highest-risk hazard is earthquake at the 99th 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 Washoe County risk compare to the Nevada average?
Washoe County's composite risk percentile is 97th, compared to the Nevada state average of 46th percentile. The state's overall risk rating is Relatively Low. This means Washoe County faces higher natural disaster risk than the typical county in Nevada.
Is Washoe County at risk for earthquake?
Yes, Washoe County's earthquake risk is at the 99th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Washoe County is at the 95th 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.
Why is Washoe County higher risk than average?
Washoe County's composite risk score of 97th percentile is above the Nevada state average of 46th percentile. This elevated risk is driven by earthquake exposure (99th percentile), along with wildfire and flooding risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.

Counties with Similar Risk

Clark County

Nevada

+2.9

Very High

100th percentile

Elko County

Nevada

-8.8

Relatively Moderate

88th percentile

Douglas County

Nevada

-12.3

Relatively Moderate

84th percentile

By Logan Johnson, Founder & Data EditorUpdated Reviewed by Logan Johnson, Founder & 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.

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