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Real-time earthquake monitoring for Vallejo / Benicia / Martinez. Track seismic activity along the Concord/Green Valley Fault in Solano / Contra Costa County.
5 earthquakes recorded in the last 30 days. The most recent was M1.6 on 1/27/2026.
Carquinez Strait area along multiple fault systems. This region is monitored by the USGS seismic network and experiences regular seismic activity due to the Concord/Green Valley Fault.
The Concord/Green Valley 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 Concord/Green Valley 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 Solano / Contra Costa County and surrounding areas.