Idaho vs Tennessee Earthquake Risk

Idaho has a higher earthquake risk with a score of 6/10 (Moderate-High) compared to Tennessee at 5/10 (Moderate). This means Idaho faces more frequent and potentially more destructive seismic events.

Idaho averages approximately 100 earthquakes per year, while Tennessee averages about 50 per year. Idaho experiences roughly 50 more earthquakes annually.

Idaho is associated with Lost River, Lemhi, Beaverhead faults. Tennessee is associated with New Madrid Seismic Zone (western TN). These fault systems determine the type and frequency of seismic activity each state experiences.

In Idaho, approximately 45% of the population lives in areas at risk from earthquakes, compared to 25% in Tennessee. Idaho has a larger percentage of residents exposed to seismic hazard.

Idaho's most notable earthquake: 1983 Borah Peak (M6.9). Tennessee's most notable earthquake: 1811 New Madrid (felt strongly). These historical events illustrate the seismic potential of each state.