San Ramon, CA – A magnitude 3.7 earthquake rattled parts of the East Bay this afternoon, with residents from San Ramon to Walnut Creek reporting brief shaking as the tremor struck southeast of the city.
According to the U.S. Geological Survey (USGS), the quake occurred at 17:07:58 UTC on Monday at a depth of 9.5 kilometers, centered roughly 4 kilometers southeast of San Ramon. More than a dozen residents submitted “Did You Feel It?” reports within the first minutes after the quake, describing light shaking but no immediate damage.
USGS data shows the quake produced threshold-level intensity values around the epicenter, with most shaking rated at Intensity II–III, commonly associated with vibrations that may be felt indoors but rarely cause structural damage. The event falls within a seismically active corridor stretching from Danville through Pleasanton, an area that routinely experiences small to moderate earthquakes.
No injuries or service impacts have been reported as of Monday afternoon. Officials note that quakes of this size are typically considered minor but still serve as a reminder of the Bay Area’s ongoing seismic risk, particularly along the Calaveras and Hayward fault systems.
Residents who felt the shaking are encouraged to submit reports to the USGS, which helps scientists refine intensity maps and better understand how earthquakes propagate across local geology and infrastructure.
More updates will be provided if additional seismic activity occurs or if local emergency agencies issue new advisories.
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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