L.A.'s ShakeAlert app lower standards for quakes

Mayor Eric Garcetti held a news conference Wednesday to announce changes to the ShakeAlert LA app. The biggest change is that users will now be alerted when weaker quakes strike in some cases up to 45-seconds or more beforehand.

Preliminary 4.9 magnitude earthquake hits Ridgecrest

At approximately 6:11 a.m. Pacific Time on Friday morning, a magnitude 4.9 earthquake shook the Los Angeles area, centered in Ridgecrest, California, according to the USGS. No reports of damage have been initially reported.

Surviving the earthquake: Prepare, Survive, Recover

The 1906 San Francisco Quake is one of the most powerful on record in California. Since then, there have been dozens of strong quakes that have caused widespread damage and loss of life – from the Northridge Quake in Southern California to the Loma Prieta Quake in Northern California.

The Latest: Seismologist says be prepared for more quakes

RIDGECREST, Calif. (AP) - The Latest on a strong earthquake in Southern California (all times local): 2:50 p.m. A seismologist says two large earthquakes that were centered in the Mojave Desert in California caused less damage and fewer injuries because they were centered away from densely populated areas.

6.4 magnitude earthquake rattles Southland on Fourth of July

A magnitude-6.4 earthquake was felt throughout the Southland on Thursday, shaking up local residents celebrating the Fourth of July. The strong earthquake rattled a large part of Southern California and parts of Nevada making hanging lamps sway and photo frames on walls shake.

Magnitude 3.6 earthquake shakes Camarillo area

At approximately 5:07 p.m. Pacific Time on June 12, a magnitude 3.6 earthquake shook the Camarillo area, according to the USGS. No reports of damage have been initially reported.