Impact: The 1933 earthquake was Southern California’s deadliest in the modern record, leaving nearly 120 dead and causing $40 ...

With Gov. Jerry Brown’s approval, California officials are reviving an ambitious plan to study dangerous earthquake faults and create zoning maps that could restrict development. The California ...

Wondering, “Was there an earthquake now?” Track the **latest earthquakes and aftershocks in California with this interactive map. Data is proudly provided by the U.S. Geological Survey … ...

SAN JOSE, Calif. – SAN JOSE, Calif. (AP) — California geology officials have released an updated state seismic activity map that they hope will improve earthquake preparedness and construction ...

The state’s first new map of earthquake faults in 16 years shows active faults in Orange County — among them the Newport-Inglewood fault, one of the most dangerous according to the state’s ...

Nearly all of California has a more than 95% chance of a damaging earthquake in the next century, a new United States Geological Survey map shows. The new USGS National Seismic Hazard Model ...

California has been required by state law to map the known active surface faults since the 1970s. Those maps number in the hundreds and were cumbersome to search before they were digitized.

This map shows locations of earthquakes of magnitude 2.5 or larger. Red circles mark earthquakes from 1974-2002; green ones occurred before 1974.

California is riddled with a number of fault lines that frequently cause earthquakes, including Arrowhead, Waterman Canyon, San Jacinto, Santa Ana, Cleghorn, Tunnel Ridge faults and the most ...