3.5-magnitude earthquake strikes near Ontario

CBS News Los Angeles Live

A 3.5-magnitude earthquake struck near Ontario this afternoon, according to the U.S. Geological Survey (USGS).

The quake hit at 12:56 p.m. with an epicenter 1.24 miles southeast of Ontario. USGS initially reported it as a preliminary 3.1-magnitude before upgrading that to a 3.5 about half an hour later.

Its effects could be felt as far east as Highland, south to Camp Pendleton, west into Lakewood, and as far north as Azusa, according to the USGS shake map.

A preliminary 3.5 earthquake strikes near Ontario on Oct. 1, 2024. USGS

This is the second earthquake to strike a city in San Bernardino County this week. 

Three days ago, a 3.2-magnitude earthquake struck near Fontana. Authorities did not report any injuries or damages to buildings. On the same day, Malibu experienced a 3.2-magnitude earthquake. 

Malibu has been hit by a series of earthquakes in recent weeks, most recently last Saturday when a 3.0 magnitude quake hit at almost the exact same time on Saturday afternoon. 

Elsewhere in Los Angeles County, the USGS detected a slightly smaller earthquake, 2.9-magnitude, in Inglewood on Sept. 23.