A magnitude 5.8 earthquake struck off the coast of Northern California Thursday morning, according to the USGS.
The U.S. National Tsunami Warning Center indicated that a tsunami was not expected following the temblor.
The quake, which rattled just before 8:40 a.m. at a depth of 3 miles (5 kilometers), was reported to have hit about 102 miles west of Capetown and roughly 115 miles away from Eureka, according to the USGS.
A magnitude 5.0 aftershock followed roughly 45 minutes later, according to the USGS. The temblor also did not trigger any tsunami threats.