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

Okanogan County Disaster Risk

Okanogan County, Washington

FEMA Risk Rating

Relatively Moderate

National Percentile

89th

of 3,144 counties

State Rank

#16

of 39 (1 = highest risk)

Flood Risk

89th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Moderate

Higher than 89% 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 7% of US counties

Earthquake

Seismic activity and ground shaking risk

Moderate

Higher than 86% of US counties

Risk Overview

About Natural Disaster Risk in Okanogan County, Washington

Okanogan County carries relatively moderate risk

Okanogan County's composite risk score of 89.19 ranks in the "Relatively Moderate" category, above the national average. The score reflects a significant hazard mix centered on wildfires and flooding, with notable earthquake exposure.

Above average risk across Washington

Okanogan County scores 89.19 against Washington's state average of 70.01, placing it among the state's higher-risk regions. This elevation is driven by extreme wildfire vulnerability across the county's expansive interior forests.

Okanogan shares risk with regional peers

Okanogan County (89.19) ranks similarly to Kittitas County (89.12) and Lewis County (89.69), forming a band of elevated hazard exposure across north-central and central Washington. All three counties face severe wildfire and earthquake threats.

Wildfire and flooding lead Okanogan's risks

Okanogan County faces extreme wildfire risk (99.30) affecting vast forested areas, plus severe flood exposure (89.12) from the Okanogan and Columbia Rivers. Earthquakes (86.23) pose a secondary hazard across the entire county, while tornadoes (6.65) are extremely rare.

Wildfire, flood, and earthquake coverage

Okanogan County residents should combine robust wildfire defensibility with comprehensive insurance: clear vegetation around homes, maintain gutters, and secure flood and earthquake policies to cover these dominant hazards. Properties near rivers or in forest zones face compounded risks requiring full coverage review.

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

Preparedness Guide

What to Prepare for in Okanogan County

Top Hazards by Exposure

  1. #1
    WildfirePrepare
    99th percentile
  2. #2
    FloodPrepare
    89th percentile
  3. #3
    EarthquakePrepare
    86th percentile

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

Risk Advisory: Okanogan County

Risk Verdict

With a composite score at the 89th percentile, Okanogan County sits above the national median for natural hazard exposure. Proactive preparedness — not reactive response — is key to managing life in one of the country's higher-risk counties; Okanogan County residents should plan accordingly.

Hazard Breakdown

Wildfire risk is Okanogan County's dominant natural hazard, ranked at the 99th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 89th percentile nationally. Additional tracked hazards include earthquake (86th percentile), tornado (7th percentile).

Preparedness Context

At the 99th percentile nationally for wildfire risk, Okanogan 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 flood exposure at the 89th 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 Okanogan County residents.

Regional Context

At 19.2 points above the Washington state average, Okanogan County carries meaningfully higher natural disaster exposure than a typical Washington county.

Is your household prepared for Okanogan 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 Okanogan County, WA?
Okanogan County has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 89th 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 Okanogan County?
Okanogan County is evaluated for five major natural hazard types: wildfire (99th percentile), flooding (89th percentile), earthquake (86th percentile), tornado (7th percentile). The highest-risk hazard is wildfire 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 Okanogan County risk compare to the Washington average?
Okanogan County's composite risk percentile is 89th, compared to the Washington state average of 70th percentile. The state's overall risk rating is Relatively Low. This means Okanogan County faces higher natural disaster risk than the typical county in Washington.
Is Okanogan County at risk for wildfire?
Yes, Okanogan County's wildfire risk is at the 99th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Okanogan County is at the 89th 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 Okanogan County higher risk than average?
Okanogan County's composite risk score of 89th percentile is above the Washington state average of 70th percentile. This elevated risk is driven by wildfire exposure (99th percentile), along with flooding and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.
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.