St. Helena Island, SC has a low earthquake risk, with a total of 1 earthquakes since 1931. The USGS database shows that there is a 4.37% chance of a major earthquake within 50km of St. Helena Island, SC within the next 50 years. The largest earthquake within 30 miles of St. Helena Island, SC was a 2.8 Magnitude in 1989.
View the probability of a major earthquake within the next 50 years in St. Helena Island, SC.
View the number of earthquake incidents in St. Helena Island, SC by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in St. Helena Island, SC within 30 miles. All distances and depths in the table are measured in miles.