A small earthquake was observed in Summerville on Wednesday, May 6th, at 1:07 p.m.
There are about 1,000 quakes of that size per day in the world.
Here's some details about the quake from Erin Beutel, Associate Professor of Geology at the College of Charleston and SCEEP (South Carolina Earthquake Education and Preparedness) Director:
On Wednesday, May 6th at approximately 1:07 eastern time a small earthquake was felt and heard in the Summerville region of S.C.
Data is sparse at this time, but early approximations indicate that this earthquake is smaller than the January 29, 2009 magnitude 2.5 earthquake.
So far this year, small earthquakes have been recorded near the Monticello Reservoir north of Columbia, between Orangeburg and Aiken, and north of Florence. None of these earthquakes were large enough to cause damage, but all of them were reported by local citizens as either shaking or a loud boom.
While this may seem like a large number of earthquakes for South Carolina, it is a relatively normal year in terms of earthquakes. We also have very good information coming in from citizens that allows us to keep track of smaller earthquakes that might otherwise have gone unnoticed and that are then also reported on the news.
You can get more details in the earthquake's page at the USGS.