Idaho vs Missouri Earthquake Risk

Idaho and Missouri share the same risk score of 6/10 (Moderate-High). Both states face similar levels of seismic hazard, though the specific fault systems and earthquake characteristics differ.

Idaho averages approximately 100 earthquakes per year, while Missouri averages about 200 per year. Missouri experiences roughly 100 more earthquakes annually.

Idaho is associated with Lost River, Lemhi, Beaverhead faults. Missouri is associated with New Madrid Seismic Zone. 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 30% in Missouri. Idaho has a larger percentage of residents exposed to seismic hazard.

Idaho's most notable earthquake: 1983 Borah Peak (M6.9). Missouri's most notable earthquake: 1811-12 New Madrid (M7.5-7.7). These historical events illustrate the seismic potential of each state.