Oregon vs Wyoming Earthquake Risk

Oregon has a higher earthquake risk with a score of 8/10 (High) compared to Wyoming at 6/10 (Moderate-High). This means Oregon faces more frequent and potentially more destructive seismic events.

Oregon averages approximately 500 earthquakes per year, while Wyoming averages about 2,000 per year. Wyoming experiences roughly 1,500 more earthquakes annually.

Oregon is associated with Cascadia subduction zone, Klamath graben. Wyoming is associated with Teton Fault, Yellowstone volcanic zone. These fault systems determine the type and frequency of seismic activity each state experiences.

In Oregon, approximately 80% of the population lives in areas at risk from earthquakes, compared to 40% in Wyoming. Oregon has a larger percentage of residents exposed to seismic hazard.

Oregon's most notable earthquake: 1993 Scotts Mills (M5.6). Wyoming's most notable earthquake: 1959 Hebgen Lake (nearby, M7.3). These historical events illustrate the seismic potential of each state.