Scientists say a large quake on the Ventura fault could spawn a tsunami that begins in the Santa Barbara Channel and affect coastal communities to the south.
A series of small earthquakes hit the Santa Clarita area just before 8 a.m. Saturday, according to the US Geological Survey.
A magnitude-4.0 earthquake shook part of the San Bernardino County early Monday morning.
Three dozen members of Congress from California, Oregon and Washington are urging full funding of a West Coast earthquake early warning system.
A new study by the U.S. Geological Survey says more data is needed to be able to say for sure if a link exists between unconventional oil and gas development and degraded water quality.
The tremor was reported by the United States Geological Survey at 3:26 p.m.
A magnitude-4.1 earthquake shook an area near the Salton Sea but there have been no reports of damages or injuries.
A 3.3-magnitide quake was reported south of Joshua Tree, according to the U.S. Geological Survey.
A 2.6-magnitude earthquake shook the San Fernando Valley Tuesday.
Seismologists say an early warning system did notify scientists that the quake was imminent, but that the system still needs work.
There were no immediate reports of damage or injury.
A 3.5-magnitude quake was reported in Wrightwood Friday morning, according to the USGS.
The California Institute of Technology and the United States Geological Survey selected the city of Long Beach to serve as a beta site for California Integrated Seismic Network (CISN) Earthquake Early Warning System (EEWS).
A San Fernando Valley lawmaker is among several members of Congress calling for funding of an early warning system that could alert residents before an earthquake hits.
A pair of small earthquakes rattled the Southland within one hour of each other Thursday, according to reports.