A 3.5-magnitude earthquake struck near Fontana, California, on August 5, 2025. Here's what caused it, how common earthquakes are in the region, and a look at Fontana’s seismic history.

Two earthquakes shook portions of Southern California within a few minutes of each other early Wednesday morning.

A 3.5-magnitude temblor hit some 3.7 miles north-northwest of Rialto and about 4 miles north-northeast of Fontana. The depth ...

The preliminary 3.5-magnitude earthquake hit just before 5 p.m. on Tuesday, about four miles northwest of Rialto, according to the United States Geological Survey. The quake was at a depth of more ...

A magnitude 3.5 earthquake was reported Tuesday at 4:54 p.m. in Rialto, according to the U.S. Geological Survey.

RIALTO, Calif. (KABC) -- A 3.5-magnitude earthquake struck near Fontana in the Inland Empire Tuesday afternoon, according to the USGS. The quake hit at approximately 4:54 p.m. and was centered about 3 ...

A preliminary 3.5-magnitude earthquake rattled Rialto on Tuesday, according to the United States Geological Survey.

A 3.5 magnitude earthquake struck near Rialto, California, Tuesday afternoon, with tremors felt as far as Los Angeles. The ...

A magnitude 3.5 earthquake struck in San Bernardino County on Tuesday afternoon, causing shaking felt as far as Los Angeles ...

A magnitude 3.5 earthquake was reported Tuesday at 4:54 p.m. in Rialto, according to the U.S. Geological Survey.

A magnitude 3.1 earthquake on Saturday, Aug. 2, 2025, shook the San Bernardino Mountain community of Big Bear Lake.