The Geysers, California – A light earthquake shook parts of Northern California Friday evening when a magnitude 2.7 tremor struck about four kilometers north-northwest of The Geysers in Sonoma County. The quake hit at 1:03 p.m. local time (9:03 p.m. UTC) at a shallow depth of roughly 2.5 kilometers, according to the U.S. Geological Survey.
The Geysers area, known for its geothermal energy production and frequent minor quakes, recorded only limited reports of shaking. According to the USGS “Did You Feel It?” system, at least one person submitted a report, indicating mild or imperceptible tremors across nearby communities. No damage or injuries have been reported.
Residents in Cobb, Middletown, and Cloverdale—towns nearest the geothermal field—may have noticed faint rumbling or minor vibration, typical of small quakes in this region. Officials emphasize that such low-magnitude events are common in the geothermal zone, where natural steam and energy extraction can influence seismic activity.
No further alerts or warnings have been issued, though seismologists continue to monitor aftershock potential and regional activity trends. Friday’s event follows the pattern of regular micro-quakes recorded in the area throughout the week.
