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 ...

Two earthquakes have struck in California in less than 24 hours, according to reports. Sunday night, a 4.0 magnitude earthquake struck in Southern California. The earthquake, which was measured at a 3 ...

The earthquake hit on Sunday at 1:03 p.m. It was followed by a magnitude 2.5 earthquake a minute later, and magnitude 3 and magnitude 2.8 aftershocks at 1:07 p.m.

The ground beneath Southern California isn't staying still. Whether it's a blip or the new normal remains to be seen.

A 4.1-magnitude earthquake shook Malibu, the San Fernando Valley and other parts of Southern California on Sunday ... according to the agency’s updated map. No immediate reports of any injuries ...

A magnitude 3.2 earthquake was reported in Los Angeles County on Sunday night, centered about 22 miles off the coast of ...

Cal Fire said the maps are proactive, to be used in wildland-urban interface building standards for new construction and ...

De Groot said that in order to avoid a magnitude 6.0 earthquake, Southern California would have to experience about a thousand magnitude 4.0 earthquakes. Jeff Nguyen is proud to work in his ...

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 ...