The epicenter of a 4.0 earthquake south of Rancho Palos Verdes on Wednesday, May 15, 2013.
A magnitude-4.0 earthquake rattled portions of the South Bay today, but there were no immediate reports of damage or injuries.
The quake, which was originally reported with a magnitude of 3.9 but was quickly upgraded, struck at 1 p.m. six miles south of Rancho Palos Verdes and seven miles southwest of San Pedro, according to the U.S. Geological Survey.
It was the latest in a series of temblors that have hit the Southland in recent weeks. Three quakes have struck in the Marina del Rey area — a magnitude-3.0 on Thursday afternoon, a magnitude-2.8 around 8 p.m. April 28 and a magnitude-3.2 quake around 8 p.m. April 26.