A 6.0 magnitude earthquake that struck south of Lake Tahoe Thursday afternoon was felt across the Bay Area.
The 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.
More than 40 aftershocks were reported in the first two hours, including at least seven of magnitude-4.0 or greater, the USGS reported.
“People in the area should expect aftershocks for days following an earthquake of this size,” said Jason Ballman with the Southern California Earthquake Center at the University of Southern California. “We’ve already seen a pretty vigorous aftershock sequence.”