An earthquake with a preliminary magnitude of 5.2 rattled the San Diego County area Monday. According to the U.S. Geological ...

KTLA California Interactive Earthquake Map So far, there have been no reports ... according to the USGS. In North America, only Alaska records more quakes per year than California.

The North American and Pacific tectonic plates had moved past each other by more than 15 feet — compared to an annual average of two inches. The earthquake is estimated to have measured 8.3 on ...