A third earthquake struck California in less than six hours, this one rocking the city of Hayward near San Francisco and San ...

This is the fourth eartquake to hit California with others felt across the region including shaking in San Bernardino, ...

New research uncovers a surprising clue in earthquake forecasting: tiny curved scratches on fault planes. These marks reveal ...

This sudden jerk creates an earthquake. The San Andreas Fault is undoubtedly the most famous transform boundary in the world. To the west of the fault is the Pacific plate, which is moving northwest.

That two inches -- the average distance the San Andreas fault moves each year -- has the potential to unleash an earthquake of epic proportions directly under the San Francisco and San Jose area ...

Junípero Serra. In 1812, a powerful quake — today, estimated at a magnitude of 7.5 and believed to have been caused by the San Andreas Fault — shook Southern California and immediately destroyed seven ...

Movement along the San Andreas Fault was to blame. 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.