South Carolina vs Tennessee Earthquake Risk

South Carolina and Tennessee share the same risk score of 5/10 (Moderate). Both states face similar levels of seismic hazard, though the specific fault systems and earthquake characteristics differ.

South Carolina averages approximately 15 earthquakes per year, while Tennessee averages about 50 per year. Tennessee experiences roughly 35 more earthquakes annually.

South Carolina is associated with Middleton Place-Summerville Seismic Zone. Tennessee is associated with New Madrid Seismic Zone (western TN). These fault systems determine the type and frequency of seismic activity each state experiences.

In South Carolina, approximately 20% of the population lives in areas at risk from earthquakes, compared to 25% in Tennessee. Tennessee has a larger percentage of residents exposed to seismic hazard.

South Carolina's most notable earthquake: 1886 Charleston (M7.3). Tennessee's most notable earthquake: 1811 New Madrid (felt strongly). These historical events illustrate the seismic potential of each state.