Arizona vs Indiana Earthquake Risk

Arizona has a higher earthquake risk with a score of 3/10 (Low-Moderate) compared to Indiana at 2/10 (Low). This means Arizona faces more frequent and potentially more destructive seismic events.

Arizona averages approximately 20 earthquakes per year, while Indiana averages about 5 per year. Arizona experiences roughly 15 more earthquakes annually.

Arizona is associated with Basin and Range faults. Indiana is associated with Wabash Valley Seismic Zone. These fault systems determine the type and frequency of seismic activity each state experiences.

In Arizona, approximately 15% of the population lives in areas at risk from earthquakes, compared to 5% in Indiana. Arizona has a larger percentage of residents exposed to seismic hazard.

Arizona's most notable earthquake: 1887 Sonoran (M7.2, felt in AZ). Indiana's most notable earthquake: 2008 Mt. Carmel (M5.2, nearby). These historical events illustrate the seismic potential of each state.