U.S. Geological Survey (USGS)

3-1-magnitude-earthquake-hits-san-ramon-valley-early-today

3.1 Magnitude Earthquake Hits San Ramon Valley Early Today

Editorial 16 December, 2025

UPDATE: A 3.1-magnitude earthquake shook the San Ramon Valley just moments ago, sending residents...

small-earthquake-cluster-hits-big-bear-lake-area-shaking-felt

Small Earthquake Cluster Hits Big Bear Lake Area, Shaking Felt

Editorial 5 October, 2025

UPDATE: A series of small earthquakes rocked the Big Bear Lake area in San...