CONTRA COSTA COUNTY, CA - Sunday night, a preliminary 2.7 magnitude quake was detected near San Ramon, according to the U.S. Geological Survey.

(KRON) — An earthquake shook in Sonoma County Saturday afternoon, according to the United States Geological Survey (USGS). A preliminary 2.7-magnitude earthquake was reported near Kenwood at around 9:30 a.

An earthquake with a preliminary magnitude of 3.5 was reported near Templeton on Dec. 12, according to seismic data from the United States Geological […]

A 3.6-magnitude earthquake struck near the Fillmore area in Ventura County, according to the USGS.

On Saturday, a 3.6-magnitude earthquake jolted the Ventura County area, specifically near Fillmore, California, at approximately 5:03 p.m. This seismic event, registered by the U.S. Geological Survey (USGS), occurred at a depth of nearly 7 miles and had its epicenter located about 8 miles northwest of Fillmore.

The clusters of earthquakes have all been underneath the East Bay suburb of San Ramon, which is close to the Calaveras fault. There were at least 19 earthquakes of magnitude 2 or greater on Monday alone.

The federal government and earthquake experts blamed a technical glitch for the alert that sent warnings hundreds of miles away last week.

The earthquake occurred around 3:30 p.m., with its epicenter located approximately 3 miles west of Glen Ellen. While the magnitude of 4.0 may seem moderate, it is significant enough to be felt by residents in the vicinity.

A magnitude 4.7 earthquake struck off the southern coast of Mexico, centered about 50 miles south-southwest of La Esperanza.