Arizona vs Kentucky Earthquake Risk

Arizona and Kentucky share the same risk score of 3/10 (Low-Moderate). Both states face similar levels of seismic hazard, though the specific fault systems and earthquake characteristics differ.

Arizona averages approximately 20 earthquakes per year, while Kentucky averages about 10 per year. Arizona experiences roughly 10 more earthquakes annually.

Arizona is associated with Basin and Range faults. Kentucky is associated with New Madrid (western KY). 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 15% in Kentucky. Kentucky has a larger percentage of residents exposed to seismic hazard.

Arizona's most notable earthquake: 1887 Sonoran (M7.2, felt in AZ). Kentucky's most notable earthquake: 1980 Sharpsburg (M5.2). These historical events illustrate the seismic potential of each state.