The temblor hit beneath the Pacific Ocean about 12:29 p.m., at a depth of about 10 miles beneath the surface, USGS reported. It was centered about 41 miles southwest of Ventura and 85 miles west of Los Angeles.
The Los Angeles Fire Department is in “earthquake mode” following the shaking, as is standard protocol, LAFD Chief Ralph Terrazas tweeted. He said units will be surveying the city.
There were no immediate reports of injuries or damage, according to law enforcement and fire agencies across Southern California.