There were no immediate reports of serious damage or injuries. A woman in Placerville, Calif., captured the water in her glass shaking as an earthquake along the border of California and Nevada. In Gardnerville, Nev., someone captured images of food on the floor at a grocery store. The 6.0 magnitude quake struck at 3:49 p.m. in a region about 250 miles east of San Francisco and south of Lake Tahoe. Its epicenter was 4 miles west-southwest of Walker, a California town of fewer than 900 residents. "The ground was shaking pretty bad, and then everything started falling," said Carolina Estrada, manager at the Walker Coffee Company. Syrup bottles broke, dishes fell to the ground and the roof of the shop caved in a bit.