According to the agency, the first quake, which occurred shortly after 1:30 a.m. EDT Monday, was centered about 3.9 miles east of Elgin and 21.1 miles northeast of Columbia. It had a depth of less than 2 miles.
The South Carolina Emergency Management Division took to social media early Tuesday to warn residents to expect more aftershocks in the coming weeks.
“#Aftershock intensity varies, but they tend to be of lesser magnitude than the initial #earthquake and decrease in frequency over time,” the agency tweeted.
No significant damage or injuries have been reported in connection with the quakes.
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