California vs South Carolina Earthquake Risk

California has a higher earthquake risk with a score of 10/10 (Very High) compared to South Carolina at 5/10 (Moderate). This means California faces more frequent and potentially more destructive seismic events.

California averages approximately 10,000 earthquakes per year, while South Carolina averages about 15 per year. California experiences roughly 9,985 more earthquakes annually.

California is associated with San Andreas, Hayward, San Jacinto, Cascadia. South Carolina is associated with Middleton Place-Summerville Seismic 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 20% in South Carolina. California has a larger percentage of residents exposed to seismic hazard.

California's most notable earthquake: 1906 San Francisco (M7.9). South Carolina's most notable earthquake: 1886 Charleston (M7.3). These historical events illustrate the seismic potential of each state.