Several dozen people reported feeling an overnight earthquake in the Palmetto State. Several dozen people reported feeling an overnight earthquake in the Palmetto State. Several dozen people reported feeling an overnight earthquake in the Palmetto State. Officials in South Carolina have confirmed an overnight earthquake. According to the United States Geological Survey, a 2.1 magnitude earthquake was recorded at 1:32 a.m. It happened about 2 miles west of Irmo, near Columbia. The quake had a depth of 4.5 kilometers. Several dozen people reported feeling the quake, according to the USGS.
