Umatilla County
Oregon — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 82th
Umatilla County faces medium composite natural disaster risk (NRI Risk Index score 82.3, 82th national percentile), driven primarily by wildfire and cold wave exposure. Expected annual loss across all 18 hazard types is $40M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | Medium | 0.01 / yr | $4M |
| Cold Wave | High | 0.26 / yr | $9M |
| Ice Storm | High | 0.35 / yr | $1M |
| Landslide | Medium | 1.72 / yr | $48K |
| Winter Weather | High | 15.00 / yr | $329K |
| Earthquake | Low | 0.01 / yr | $3M |
| Heat Wave | Medium | 4.84 / yr | $2M |
| Strong Wind | Medium | 0.28 / yr | $1M |
| Drought | Medium | 24.39 / yr | $913K |
| Riverine Flood | Medium | 0.64 / yr | $18M |
| Avalanche | Low | 0.03 / yr | $19K |
| Volcanic Activity | Very Low | 0.00 / yr | $102 |
| Lightning | Low | 14.35 / yr | $236K |
| Hail | Low | 0.39 / yr | $238K |
| Tornado | Very Low | 0.10 / yr | $91K |
| 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 Umatilla County?
Umatilla County has a composite FEMA National Risk Index score of 82.3 out of 100, placing it in the Medium category and the 82th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Umatilla County?
The three highest-rated hazards are Wildfire (Medium, $4M EAL), Cold Wave (High, $9M EAL), Ice Storm (High, $1M EAL). These account for most of the county's expected annual losses.
How does Umatilla County compare to other Oregon counties?
Umatilla County ranks #17 of 36 Oregon 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. Umatilla County's $40M EAL is a statistical average, not a guarantee for any specific year or address.