Ridgecrest, California
Photos and videos of the damage captured attention on social media after the quake, which caused no reported fatalities.
Fires, building collapses and injuries were all reported in the latest of what officials believe could be a continuing string of dangerous temblors.
It was felt as far away as Las Vegas, and the USGS says it also was felt in Mexico.
A widely felt magnitude 5.4 quake before dawn Friday was the strongest aftershock thus far.
WHAT'S HAPPENING
The quake struck about 150 miles northeast of Los Angeles, with no injuries reported.