A magnitude 7.1 earthquake shook Southern California on Friday, triggering fires, buckling part of a highway, damaging buildings but causing few reported injuries despite striking with eight times more force than the initial quake in the same area a day earlier.

The quake struck at about 8:20 p.m. near the town of Ridgecrest south of Death Valley National Park, about 125 miles (202 km) northeast of Los Angeles, according to the U.S. Geological Survey.

It was followed by at least 16 aftershocks of magnitude 4 or above, the USGS said, which also warned of a 50 percent or better chance of another magnitude 6 quake in the days ahead.