A 7.0 magnitude earthquake shook a large area of Northern California on Thursday, knocking items off grocery store shelves, sending children scrambling under desks and prompting a brief tsunami warning for 5.3 million people along the U.S. West Coast.
The quake struck at 10:44 a.m. west of Ferndale, a small city in coastal Humboldt County, about 130 miles (209 km) from the Oregon border, the U.S. Geological Survey said.
It was felt as far south as San Francisco, some 270 miles (435 km) away, where residents described a rolling motion for several seconds. It was followed by multiple smaller aftershocks.
