Two separate earthquakes were reported near the San Francisco Bay Area on Tuesday, according to the U.S. Geological Survey.

Two earthquakes have struck in California in less than 24 hours, according to reports. Sunday night, a 4.0 magnitude ...

The most recent risk assessment, outlined in maps published by the California Geological Survey, illustrate the devastation ...

Use controls or your thumb to move and zoom. Thousands of earthquakes are recorded in California annually, but the vast majority are incredibly minor. Several hundred reach a magnitude of 3.0 ...

A light, 4.1-magnitude earthquake struck in Southern California on Sunday ... prompt U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that ...

Smartphones can not only deliver earthquake forecasts but also provide real-time alerts and safety instructions during ...

The earthquake, measuring 3.93 magnitude, struck near Los Angeles, California, on Sunday night, and was felt in parts of Malibu, Ventura County and the San Fernando Valley ...

A USGS map shows where in California 2.5 magnitude (or greater) earthquakes were recorded in the last seven days—the San Andreas Fault is represented as a thick red line. A USGS map shows where ...

4.0 in Southern California, 5.0 in the United States, and 7.0 in North America. Quakes below magnitude 3.0 are often not felt and do not appear on this map. Intensity contours show how strongly a ...