JOLT! East Bay Awakens to a 4.1 Magnitude Earthquake Rattle
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- September 23, 2025
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Residents across the East Bay and beyond were abruptly awakened Monday morning as a significant 4.1 magnitude earthquake rattled the region. The seismic event, striking just after 7:16 a.m., sent a distinct jolt through the area, prompting many to take to social media to share their experiences of the early morning shake-up.
The United States Geological Survey (USGS) confirmed the quake’s epicenter was located approximately 13 miles east of San Jose, specifically near the Alum Rock area.
Registering at a depth of about seven miles, the tremor is believed to have originated along the active Calaveras Fault, a prominent geological feature known for its seismic activity in the Bay Area.
Reports poured in from various corners of the Bay, with residents feeling the jolt from San Francisco to Oakland and extending south into Santa Clara County.
While categorized as "light" shaking by the USGS, the earthquake was strong enough to create a noticeable rumble and sway, sparking immediate conversations online about the unexpected start to the week. Fortunately, despite the widespread sensation, there were no immediate reports of damage or injuries following the incident.
For many, this morning's quake served as a potent reminder of living in an active seismic zone.
Experts continually advise Bay Area residents to remain prepared for such events, underscoring the importance of having emergency plans and supplies readily available. As the region settles back into its routine, the 4.1 magnitude shake-up will undoubtedly be a topic of discussion throughout the day.
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