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, Redondo Beach, Torrance and Santa Monica, the San Fernando and San Gabriel valleys and other areas.

LOS ANGELES - A magnitude 4.0 earthquake followed by several aftershocks struck Southern California Sunday morning, according to the U.S. Geological Survey. The quake was reported about 4.3 miles southeast of Ontario at 3:51 a.m. It had a recorded depth of 5.2 km. There were no immediate reports of damage or injuries.

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 struck near Ontario, California; no significant damage or injuries have been reported.

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.

Shaking was reported in communities east of Los Angeles due to a magnitude-3.1 earthquake in Ontario. The quake with a depth of about 3.5 miles was reported at 12:56 p.m. Weak to light shaking was reported in Ontario, Rancho Cucamonga, Fontana, Upland, Riverside and other areas.

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.

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.