The USGS said the earthquake struck the San Ramon area late on Sunday night.

Two earthquakes struck near The Geysers in California’s North Bay, rattling homes across the region and drawing fresh attention to one of the state’s most seismically active zones. The larger event ...

Thousands of Californians received earthquake warnings on Thursday after a 4.7-magnitude tremor shook Northern California. The US Geological Survey (USGS) issued a ShakeAlert after the quake struck at ...

The Cascadia Subduction Zone is unusually quiet for a megathrust fault. Spanning more than 600 miles from Canada to ...