Alaska vs South Carolina Earthquake Risk

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

Alaska averages approximately 12,000 earthquakes per year, while South Carolina averages about 15 per year. Alaska experiences roughly 11,985 more earthquakes annually.

Alaska is associated with Alaska-Aleutian subduction zone, Denali Fault. 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 Alaska, approximately 95% of the population lives in areas at risk from earthquakes, compared to 20% in South Carolina. Alaska has a larger percentage of residents exposed to seismic hazard.

Alaska's most notable earthquake: 1964 Great Alaska (M9.2). South Carolina's most notable earthquake: 1886 Charleston (M7.3). These historical events illustrate the seismic potential of each state.