Okanogan County
Washington — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 89th
Okanogan County faces medium composite natural disaster risk (NRI Risk Index score 89.2, 89th national percentile), driven primarily by wildfire and landslide exposure. Expected annual loss across all 18 hazard types is $51M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | High | 0.02 / yr | $20M |
| Landslide | Medium | 4.50 / yr | $82K |
| Avalanche | High | 0.17 / yr | $1M |
| Riverine Flood | Medium | 1.96 / yr | $23M |
| Earthquake | Low | 0.01 / yr | $2M |
| Cold Wave | Medium | 0.74 / yr | $3M |
| Hail | Medium | 0.08 / yr | $620K |
| Volcanic Activity | Very Low | 0.00 / yr | $166 |
| Heat Wave | Low | 3.94 / yr | $657K |
| Winter Weather | Medium | 22.24 / yr | $89K |
| Lightning | Medium | 15.78 / yr | $253K |
| Strong Wind | Low | 0.10 / yr | $140K |
| Drought | Very Low | 7.18 / yr | $3K |
| Ice Storm | Very Low | 0.01 / yr | $3K |
| Tornado | Very Low | 0.08 / yr | $20K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Okanogan County?
Okanogan County has a composite FEMA National Risk Index score of 89.2 out of 100, placing it in the Medium category and the 89th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Okanogan County?
The three highest-rated hazards are Wildfire (High, $20M EAL), Landslide (Medium, $82K EAL), Avalanche (High, $1M EAL). These account for most of the county's expected annual losses.
How does Okanogan County compare to other Washington counties?
Okanogan County ranks #16 of 39 Washington counties for overall natural disaster risk, with a medium rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Okanogan County's $51M EAL is a statistical average, not a guarantee for any specific year or address.