Oregon tsunami risk
Clatsop County has the highest tsunami risk in Oregon, scoring 96.9 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | Clatsop County | 96.9 | Very High |
| 2 | Curry County | 89.2 | Relatively High |
| 3 | Coos County | 84.6 | Relatively Moderate |
| 4 | Tillamook County | 78.5 | Relatively Moderate |
| 5 | Lincoln County | 76.9 | Relatively Moderate |
| 6 | Douglas County | 41.5 | Very Low |
| 7 | Lane County | 29.2 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Tsunami risk nationally:
Other hazard risks in Oregon:
Frequently asked questions
What is the highest tsunami risk county in Oregon?
Clatsop County, OR has the highest tsunami risk in Oregon, with a FEMA National Risk Index score of 96.9 out of 100 (rated "Very High").
How many counties in Oregon are rated Very High for tsunami risk?
1 of 7 scored Oregon counties are rated "Very High" for tsunami risk by FEMA's National Risk Index.
What causes tsunami risk in Oregon?
Tsunami risk covers expected losses from seismically generated ocean waves. Risk concentrates on the Pacific Coast — especially Oregon, Washington, and Alaska — where the Cascadia Subduction Zone and other fault systems can generate destructive local tsunamis with little warning. Atlantic and Gulf coasts carry lower but non-zero risk from distant earthquake sources.