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.

Hours after a powerful earthquake struck off Russia's Kamchatka Peninsula, the region's highest volcano began erupting.

Multiple earthquakes shook Southern California hours after a tremor was felt on the East Coast on Aug. 5, according to data ...

An earthquake with a magnitude of 4.3 struck about 5 miles from Fontana around 9:30 a.m. Wednesday and was felt around ...

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

The Rialto Fire Department reported that a series of small earthquakes shook the northwestern portion of the city Thursday ...

LOS ANGELES — A magnitude 4.3 earthquake rumbled through Muscoy in San Bernardino County on Thursday morning, triggering ...

A preliminary 4.4-magnitude earthquake struck Southern California Thursday morning, according to the U.S. Geological Survey.

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

RIALTO, Calif. (KABC) -- A 3.5-magnitude earthquake struck near the Fontana area and rattled other parts of the Inland Empire Tuesday afternoon, according to the U.S. Geological Survey.

A 4.3 magnitude earthquake struck near Fontana, California, at around 9:30 a.m. Wednesday, shaking the Southern California ...

A swarm of earthquakes, including one with a preliminary magnitude of 4.3, shook the Inland San Bernardino County on Thursday morning. According to the U.S. Geological Survey, the quake struck at 9:32 ...