Welcome to LoanMart Field, where the Rancho Cucamonga Quakes shake it up with mascots Tremor and Aftershock. Angels fans can ...

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San Andreas fault meets the Cascadia subduction zone, an area that could give rise ...

A light, 4.9-magnitude earthquake struck in Southern California on Monday, according to the United States Geological Survey.

A light, 4.7-magnitude earthquake struck in Utah on Thursday, according to the United States Geological Survey. The temblor ...