34-100
Earthquakes can occur almost anywhere in southern California, but are usually located in areas on major fault lines.
Yes they occur in California because the Pacific and the North American plates are sliding past one another.
Yesterday. There was a 2.8 and a 3.5, and two days before there was a 4.4. they happen all the time. Now when "The Big One"hits, no one knows.
IDK but there is a major earthquake every 100 years in San Andreas