Earthquake Hazards Program
The USGS Earthquake Hazards Program is part of the National Earthquake Hazards Reduction Program (NEHRP), established by Congress in 1977. We monitor and report earthquakes, assess earthquake impacts and hazards, and research the causes and effects of earthquakes.
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Significant Earthquakes Past 30 DaysSignificant Earthquake Archive
In the wee hours of Sunday morning at 3:20am, the residents and wineries of Napa Valley were shaken by a magnitude 6.0 earthquake, the largest in the San Francisco Bay Area in over 25 years, and the first since the M7.9 1906 earthquake to rupture on the surface. This article describes what USGS (and USGS-funded) scientists have learned from the data one year after the earthquake.View Research
A new study by the U.S Geological Survey released today presents evidence that, in addition to the recent induced earthquakes, most of the larger earthquakes in Oklahoma in the past century may likely have also been induced by industrial activities.View Research
Microearthquakes continue to occur near San Ramon, California. Since the swarm began on Tuesday October 13, 2015, at 8:50am local time with a magnitude 0.8 earthquake, the Northern California Seismic Network (NCSN) has located 242 earthquakes in the region beneath San Ramon. The largest earthquake in the swarm was a magnitude 3.6 earthquake on October 19 at 4:21pm local time.View Earthquake