California ? A moderate earthquake struck Tuesday on the edge of the Salton Sea in Southern California’s Imperial County, but there were no reports of injuries or damage.

The magnitude-4.8 quake struck at 4:55 a.m. at a depth of about 3.5 miles, said seismologist Amy Vaughn of the U.S. Geological Survey. It was centered two miles south of the small town of Bombay Beach on the eastern shore of the Salton Sea, about 90 miles east of San Diego.

The main quake was followed by dozens of aftershocks.