Sonoma County, CA – A magnitude 3.0 earthquake struck Northern California on Wednesday afternoon, centered about 8 kilometers northwest of The Geysers geothermal field, a seismically active area near the Sonoma–Lake County line, according to the U.S. Geological Survey (USGS).
According to the USGS, the quake occurred at 7:28 a.m. local time at a shallow depth of approximately 1.8 kilometers, increasing the likelihood that it was felt by residents in nearby communities including Cloverdale, Healdsburg, Clear Lake, Calistoga, and parts of northern Napa Valley.
The epicenter was located north of Highway 128 and west of Clear Lake, an area well known for frequent seismic activity due to geothermal operations and natural fault movement associated with The Geysers, the largest geothermal energy complex in the world.
Early reports indicate no injuries or damage, and emergency officials have not issued any alerts or closures. However, residents across Sonoma County, Lake County, and surrounding rural areas may have experienced brief shaking, rattling, or vibration, especially in homes closer to the epicenter.
The USGS classified the event as automatic review, meaning details may be refined as additional seismic data is analyzed. Shallow earthquakes of this size are common in the region and typically do not cause significant damage, though minor aftershocks are possible.
Residents who felt the quake are encouraged to submit reports through the USGS “Did You Feel It?” program, which helps scientists better understand ground shaking patterns across Northern California.
While no action is required, officials continue to remind residents in Sonoma, Lake, and Napa counties to maintain basic earthquake preparedness, including securing heavy furniture and knowing safe drop-and-cover procedures.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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