Asotin County
Washington — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 18th
Asotin County faces very low composite natural disaster risk (NRI Risk Index score 17.9, 18th national percentile), driven primarily by wildfire and landslide exposure. Expected annual loss across all 18 hazard types is $5M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | Medium | 0.01 / yr | $982K |
| Landslide | Low | 0.44 / yr | $6K |
| Avalanche | Low | 0.01 / yr | $4K |
| Heat Wave | Low | 3.78 / yr | $356K |
| Riverine Flood | Low | 0.39 / yr | $4M |
| Earthquake | Very Low | 0.00 / yr | $77K |
| Winter Weather | Very Low | 12.62 / yr | $14K |
| Cold Wave | Very Low | 0.09 / yr | $149K |
| Drought | Very Low | 28.56 / yr | $155 |
| Ice Storm | Very Low | 0.15 / yr | $6K |
| Strong Wind | Very Low | 0.21 / yr | $58K |
| Lightning | Very Low | 16.68 / yr | $23K |
| Hail | Very Low | 0.40 / yr | $16K |
| Tornado | Very Low | 0.02 / yr | $27K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Asotin County?
Asotin County has a composite FEMA National Risk Index score of 17.9 out of 100, placing it in the Very Low category and the 18th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Asotin County?
The three highest-rated hazards are Wildfire (Medium, $982K EAL), Landslide (Low, $6K EAL), Avalanche (Low, $4K EAL). These account for most of the county's expected annual losses.
How does Asotin County compare to other Washington counties?
Asotin County ranks #37 of 39 Washington counties for overall natural disaster risk, with a very low 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. Asotin County's $5M EAL is a statistical average, not a guarantee for any specific year or address.