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2.6 Magnitude Quake Shakes San Ramon, Aftershocks Expected

12/28/2025

35 8 Full Breakdown

Summary

Story summary

A 2.6 magnitude earthquake struck near San Ramon, California, on December 28, 2025, at 5:18 a.m.
The United States Geological Survey (USGS) placed the epicenter 2 miles east-southeast of San Ramon at 5 miles depth.
Residents in Pleasanton, Danville, and San Ramon felt the tremor, with 76 reports to the USGS.
Following a 3.0 magnitude event near Dublin four days earlier, officials urged Drop, Cover, and Hold On for aftershocks.

History

Historical Context

The 1906 San Francisco earthquake struck on April 18, registering a magnitude of 7.9 and resulting in over 3,000 deaths and extensive destruction. This disaster prompted significant changes in building codes and emergency preparedness in California. The recent 2.6 magnitude quake near San Ramon underscores the ongoing seismic risks in the region, reminding residents of the importance of earthquake readiness.

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Story summary

A 2.6 magnitude earthquake struck near San Ramon, California, on December 28, 2025, at 5:18 a.m.
The United States Geological Survey (USGS) placed the epicenter 2 miles east-southeast of San Ramon at 5 miles depth.
Residents in Pleasanton, Danville, and San Ramon felt the tremor, with 76 reports to the USGS.
Following a 3.0 magnitude event near Dublin four days earlier, officials urged Drop, Cover, and Hold On for aftershocks.

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