This map shows the location of the epicenter for the last two earthquakes to shake South Carolina. Image: USGS
BY WEATHERBOY TEAM METEOROLOGIST – MARCH 29, 2022
More than 20 earthquakes have struck seismically active South Carolina since December and another pair struck within the last 48 hours. According to the USGS and the South Carolina Emergency Management Division (SCEMD), a 2.1 magnitude earthquake struck near Lugoff on Sunday at 2:27pm. At 4:05 am yesterday, a weak 0.9 magnitude earthquake struck near Dorchester County. That quake is the second to strike the Lowcountry this year; the first happened on January 9, when a 1.4 magnitude event unfolded.
According to the South Carolina Emergency Management Division (SCEMD), there are approximately 10-15 earthquakes every year in South Carolina, with most not felt by residents; on average, only 3-5 are felt each year. Most of South Carolina’s earthquakes are located in the Middleton Place-Summerville Seismic Zone. The two most significant historical earthquakes to occur in South Carolina were the 1886 Charleston-Summerville earthquake and the 1913 Union County earthquake. The 1886 earthquake in Charleston was the most damaging earthquake to ever occur in the eastern United States; it was also the most destructive earthquake in the U.S. during the 19th century.
No one is sure what’ll become of this steady stream of light earthquakes or whether or not something larger is looming. For now, the SCEMD has been sending out Tweets to the people of South Carolina encouraging them to be prepared for any disaster this year –earthquakes included.