The quake was mostly felt in the San Bernardino County cities and areas of Ontario, Rancho Cucamonga, Eastvale and Chino. Additionally, the shaking was felt in some portions of San Bernardino, Riverside, Orange and Los Angeles counties.

A magnitude-4.0 earthquake rattled parts of Southern California early Sunday morning.  The quake near Ontario was reported at 3:51 a.m.. Shaking was reported in parts of Los Angeles, Whittier, Culver City,

An earthquake with a magnitude of 4.0 rattled the Inland Empire early Sunday morning, shaking homes and businesses and waking residents across the region. According to the U.S. Geological Survey, the quake struck at 3:41 a.

A 3.5-magnitude earthquake shook the Southern California area, the U.S. Geological Survey reported. The about 3-mile deep quake hit a little more than a mile from Ontario, about a 40-mile drive east from Los Angeles, at 12:56 p.m. Tuesday, Oct. 1, according to the USGS.

A magnitude 3.1 earthquake was reported less than a mile south of Ontario International Airport early Wednesday afternoon, the U.S. Geological Survey says.

AROMAS, Calif. -- An earthquake registering magnitude 4.2 shook part of central California early Sunday, the United States Geological Survey reported.

A 4.0 magnitude earthquake struck near Ontario early Sunday morning, jolting many Southern Californians awake unexpectedly.

The earthquake could be felt throughout the Inland Valley, as well as San Bernardino, Riverside and Orange County and parts of the Los Angeles area. It was followed by a 2.5-magnitude aftershock at 4:04 a.

A magnitude 4 earthquake rattled Southern California before dawn Sunday morning — the strongest in a series of modest earthquakes to strike near the Ontario International Airport in the last month. Sunday's 3:51 a.