A 4.1 magnitude earthquake occurred in Edgefield Friday night, according to U.S. Geological Survey, and was felt at roughly 10:30 p.m. in Aiken.

The earthquake was initially reported at a magnitude of 4.4, but the U.S. Geological Survey downgraded the intensity about 30 minutes after the quake.

Edgefield County Sheriff's Office dispatch is reporting no injuries or damages as of yet.

Derrec Becker, Public Information Coordinator with the South Carolina Emergency Management Division, said there have been no requests for state assistance so far.

"The South Carolina Emergency Management Division  is working closely with state agencies, county emergency managers in all 46 counties to determine the earthquake's effects on the state," he said in a news release.

Becker said this is the 13th earthquake in the past 12 months in the state, and South Carolina normally experiences 15 to 20 earthquakes per year.

He said this is the highest magnitude earthquake since Nov. 11 2002, when South Carolina experienced a magnitude 4.4 earthquake with an epicenter near Charleston.

Thousands of people are discussing the earthquake on Twitter and Facebook.

The U.S. Geological Survey is now reporting more than 4,000 felt the quake, and that number is growing rapidly.

Barbara Lewis lives in the Sandstone neighborhood behind the Publix shopping center off Whiskey Road and said she felt the earthquake around 10:24 p.m.

"All of a sudden there was a rumbling up from the ground and everything started shaking. I looked at John (Lewis' husband) and said, 'It's gotta be a helicopter.' Helicopters have been circling around all day. John said, 'No. That was an earthquake.' This is the first time I've ever experienced an earthquake."

Lewis said, as of midnight Friday, that she has felt no aftershocks. The earthquake, on top of this week's severe ice storm, has left her wondering what's next.

"I'm definitely going to be saying my prayers tonight," Lewis said.

Aiken Standard readers are reporting feeling the quake in the Aiken area, Trenton, Columbia, Lexington, Windsor, Williston, Augusta and Charleston, Anderson and as far away as Greenville, N.C., Athens, Ga. and Atlanta.

The largest quake in South Carolina was in Charleston in 1886, which measured a 7.3.