Arkansas vs Missouri Earthquake Risk

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

Arkansas averages approximately 40 earthquakes per year, while Missouri averages about 200 per year. Missouri experiences roughly 160 more earthquakes annually.

Arkansas is associated with New Madrid Seismic Zone (NE corner). Missouri is associated with New Madrid Seismic Zone. These fault systems determine the type and frequency of seismic activity each state experiences.

In Arkansas, approximately 20% of the population lives in areas at risk from earthquakes, compared to 30% in Missouri. Missouri has a larger percentage of residents exposed to seismic hazard.

Arkansas's most notable earthquake: 1811 New Madrid (epicenter nearby). Missouri's most notable earthquake: 1811-12 New Madrid (M7.5-7.7). These historical events illustrate the seismic potential of each state.