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San Ramon Hit by 21 Earthquakes, Residents Urged to Prepare

2/3/2026

29 4 Full Breakdown

Summary

Story summary

A series of earthquakes struck San Ramon, California on February 2, 2026, led by a 4.2-magnitude quake.
The main quake occurred at 7:01 a.m. after a swarm began at 6:27 a.m., per the U.S. Geological Survey.
The USGS recorded 21 quakes as residents from Oakland to San Francisco felt tremors.
Officials advised residents to 'Drop, Cover, and Hold On' during quakes and warned of gas leaks and downed power lines.

History

Historical Context

The 1906 San Francisco earthquake struck on April 18, measuring 7.9 in magnitude and resulting in over 3,000 deaths and widespread destruction. This disaster, which left approximately 227,000 residents homeless, prompted significant changes in building codes and safety measures. The event underscored the ongoing need for earthquake preparedness in California, a region prone to seismic activity.

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Story summary

A series of earthquakes struck San Ramon, California on February 2, 2026, led by a 4.2-magnitude quake.
The main quake occurred at 7:01 a.m. after a swarm began at 6:27 a.m., per the U.S. Geological Survey.
The USGS recorded 21 quakes as residents from Oakland to San Francisco felt tremors.
Officials advised residents to 'Drop, Cover, and Hold On' during quakes and warned of gas leaks and downed power lines.

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