California vs Utah Earthquake Risk

California has a higher earthquake risk with a score of 10/10 (Very High) compared to Utah at 7/10 (High). This means California faces more frequent and potentially more destructive seismic events.

California averages approximately 10,000 earthquakes per year, while Utah averages about 200 per year. California experiences roughly 9,800 more earthquakes annually.

California is associated with San Andreas, Hayward, San Jacinto, Cascadia. Utah is associated with Wasatch Fault Zone. These fault systems determine the type and frequency of seismic activity each state experiences.

In California, approximately 98% of the population lives in areas at risk from earthquakes, compared to 80% in Utah. California has a larger percentage of residents exposed to seismic hazard.

California's most notable earthquake: 1906 San Francisco (M7.9). Utah's most notable earthquake: 2020 Magna (M5.7). These historical events illustrate the seismic potential of each state.