Dozens of offshore aftershocks followed a magnitude-7.0 earthquake off the coast of Northern California that led to a brief tsunami warning.
By Friday morning, nine of the aftershocks reported by the USGS measured magnitude-4.0 or and greater. The strongest aftershock was a magnitude-4.7 about two minutes after the main shock, which struck at 10:44 a.m. Thursday and caused shaking along the California coast and some inland areas.
There have been no reports of significant damage, but residents and business owners in the region report damaged windows and ruptured water pipes. The shaking knocked items off store shelves.
About 5 million people were under a brief tsunami warning that extended from Oregon to the Bay Area. The warning expired after seismologists determined the undersea quake in California’s most seismically active region was unlikely to produce a water surge and significant coastal flooding.
Click here to see an updated USGS map of recent earthquakes.
