A preliminary 4.4-magnitude earthquake struck Southern California Thursday morning, 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 ...

A 4.3-magnitude earthquake struck the Inland Empire Thursday morning, according to the U.S. Geological Survey.

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

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

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. The quake hit at approximately 4:54 p.m ...

At approximately 9:32 a.m., a 4.3 magnitude earthquake occurred near Fontana California, with movement being felt in several ...

A 4.4-magnitude earthquake centered just west of Muscoy, and north of San Bernardino, rattled Southern California at 9:32 a.m ...

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

Multiple earthquakes rattled parts of San Bernardino and Riverside counties Thursday morning, according to the U.S.

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.

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