USGS reports five earthquakes on the morning of July 31 in the Rialto area, ranging from 2.5 to 4.3 in magnitude.

Series of earthquakes struck San Bernardino and Riverside counties, with a 4.3 tremor felt across Southern California.

A magnitude 4.3 earthquake struck near Fontana in San Bernardino County Thursday, shaking parts of Los Angeles County, though no damage or injuries were immediately reported. The quake struck around 9 ...

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

A magnitude 4.4 earthquake hit Southern California on Thursday morning, according to the U.S. Geological Society.

Southern California was rattled by a magnitude 4.3 earthquake on Thursday morning, according to the U.S. Geological Survey.

One of the most powerful earthquakes in recorded history sent fears of a massive tsunami across the Pacific this week.

A magnitude 4.3 earthquake struck near Fontana in San Bernardino County this morningshaking parts of Los Angeles County, ...

When earthquakes happen, California's MyShake app detects it and sends an alert to users. It's the nation's first statewide ...

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

Several small earthquakes rattled residents across San Bernardino and Riverside counties in Southern California on Thursday ...

A magnitude 4.3 earthquake struck near Fontana in San Bernardino County Thursday, shaking parts of Los Angeles County, though ...