Yamhill County
Oregon — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 83th
Yamhill County faces medium composite natural disaster risk (NRI Risk Index score 82.9, 83th national percentile), driven primarily by earthquake and heat wave exposure. Expected annual loss across all 18 hazard types is $56M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Earthquake | Medium | 0.02 / yr | $34M |
| Heat Wave | Medium | 6.14 / yr | $3M |
| Landslide | Medium | 4.43 / yr | $50K |
| Volcanic Activity | Low | 0.01 / yr | $3K |
| Riverine Flood | Medium | 0.21 / yr | $18M |
| Ice Storm | Medium | 0.73 / yr | $232K |
| Wildfire | Very Low | 0.00 / yr | $59K |
| Strong Wind | Low | 0.05 / yr | $514K |
| Lightning | Low | 4.86 / yr | $167K |
| Winter Weather | Low | 8.77 / yr | $33K |
| Cold Wave | Very Low | 0.08 / yr | $291K |
| Tornado | Very Low | 0.07 / yr | $237K |
| Drought | Very Low | 0.12 / yr | $3 |
| Hail | Very Low | 0.05 / yr | $32K |
| Avalanche | Very Low | 0.01 / yr | $4 |
| Coastal Flood | Very Low | 0.01 / 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 Yamhill County?
Yamhill County has a composite FEMA National Risk Index score of 82.9 out of 100, placing it in the Medium category and the 83th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Yamhill County?
The three highest-rated hazards are Earthquake (Medium, $34M EAL), Heat Wave (Medium, $3M EAL), Landslide (Medium, $50K EAL). These account for most of the county's expected annual losses.
How does Yamhill County compare to other Oregon counties?
Yamhill County ranks #16 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. Yamhill County's $56M EAL is a statistical average, not a guarantee for any specific year or address.