Those interested in finding out the most recent earthquakes in California can find out at sites such as the United States Geological Survey (earthquake.usgs.gov) and the California Institute of Technology's Earthquake Data Center (scedc.caltech.edu). The United States Geological Survey broadcasts California earthquakes within a few minutes of their occurrence.
An earthquake occurs when two sides of a fault, which is a fracture of the earth's crust, move against each other. Earthquakes are common in California due to the large number of faults located throughout the state. The state typically sees two to three earthquakes of a magnitude of at least 5.5 each year, according to the California Department of Conservation. Sites such as Cal Tech's Earthquake Data Center help people in the area stay up to date on earthquake activity.