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 Overview
About Natural Disaster Risk in Washoe County, Nevada
Washoe County faces relatively high national risk
With a composite risk score of 96.69, Washoe County ranks as relatively high nationally and sits above most U.S. counties in natural disaster exposure. This reflects the county's position as Nevada's largest population center with diverse terrain and multiple hazard concentrations.
Nevada's highest-risk county
Washoe County's 96.69 composite risk score far exceeds Nevada's state average of 46.25, making it the state's most hazard-exposed county. The Reno metro area and surrounding mountains create converging risks across multiple disaster categories.
Significantly riskier than rural neighbors
Washoe County (96.69) dramatically exceeds all neighboring rural counties, including Storey (25.16), Lander (16.98), and Pershing (6.01). Urban development patterns and elevation changes compound hazard exposure compared to sparsely settled regional peers.
Earthquakes, wildfires, and floods all major
Washoe County faces exceptional risk across three categories: earthquakes (99.17), wildfires (98.95), and floods (94.53), the highest scores statewide. Notably, tornado risk at 14.31 is also substantially elevated compared to other Nevada counties.
Secure comprehensive multi-hazard coverage
Homeowners must obtain earthquake (99.17), wildfire (98.95), and flood (94.53) insurance, along with standard homeowners coverage. Implement seismic retrofits, maintain defensible space, elevate utilities, and ensure proper drainage to address Washoe County's exceptional multi-hazard exposure.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Washoe County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Washoe County
Risk Verdict
Natural hazard exposure in Washoe County is notably high, placing it at the 97th percentile among all U.S. counties. Washoe County's elevated composite score reflects cumulative multi-hazard exposure; households should prepare for the county's two or three primary hazard types.
Hazard Breakdown
Earthquake risk is Washoe County's dominant natural hazard, ranked at the 99th percentile nationally under FEMA's National Risk Index. Wildfire ranks second at the 99th percentile nationally. Additional tracked hazards include flood (95th percentile), tornado (14th percentile).
Preparedness Context
At the 99th percentile nationally for earthquake risk, Washoe County is in a zone where a post-earthquake communications plan matters almost as much as pre-earthquake structural preparation — phone networks are typically congested for hours after a significant event. Alongside earthquake exposure, Washoe County's wildfire risk at the 99th percentile nationally reinforces the value of maintaining a household emergency supply cache usable for multiple hazard scenarios. For Washoe County households, the three highest-impact earthquake preparedness actions are: (1) anchor heavy furniture and water heaters, (2) store three days of water at one gallon per person per day, and (3) identify a family reunification plan for the post-quake communication blackout period.
Regional Context
A composite score 50.4 points above the Nevada state average puts Washoe County in a higher-risk category than most counties in the state.
Is your household prepared for Washoe County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Washoe County, NV?
What types of natural hazards affect Washoe County?
How does Washoe County risk compare to the Nevada average?
Is Washoe County at risk for earthquake?
How is natural disaster risk measured?
Why is Washoe County higher risk than average?
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.