Oklahoma vs South Carolina Earthquake Risk

Oklahoma and South Carolina 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.

Oklahoma averages approximately 100 earthquakes per year, while South Carolina averages about 15 per year. Oklahoma experiences roughly 85 more earthquakes annually.

Oklahoma is associated with Induced seismicity from wastewater injection. 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 Oklahoma, approximately 40% of the population lives in areas at risk from earthquakes, compared to 20% in South Carolina. Oklahoma has a larger percentage of residents exposed to seismic hazard.

Oklahoma's most notable earthquake: 2016 Pawnee (M5.8). South Carolina's most notable earthquake: 1886 Charleston (M7.3). These historical events illustrate the seismic potential of each state.