Real-time earthquake monitoring for Antioch / Brentwood / Pittsburg. Track seismic activity along the Greenville Fault in Contra Costa County.
2 earthquakes recorded in the last 30 days. The most recent was M1.7 on 1/11/2026.
Eastern Contra Costa along the Greenville Fault. This region is monitored by the USGS seismic network and experiences regular seismic activity due to the Greenville Fault.
The Greenville Fault is one of the major fault systems in the San Francisco Bay Area. Earthquakes in this region can range from minor tremors to significant events that may be felt across multiple counties.
The Greenville Fault is part of the San Andreas Fault System, which is the primary boundary between the Pacific Plate and the North American Plate. Understanding earthquake activity along this fault is crucial for earthquake preparedness in Contra Costa County and surrounding areas.