Minor Earthquake Rattles San Ramon, California
A minor earthquake with a magnitude of 1.2 struck 3.7 km (2.3 miles) from San Ramon, California, on Sunday, March 29, 2026, at 2:31 PM local time (GMT -7). The quake occurred at a highly shallow depth of 7.2 km (4.5 miles) and was reportedly not felt by people in the area.
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Earthquake Details
| Date and Time | March 29, 2026 21:31:50 UTC |
| Local Time (at epicenter) | Sunday, March 29, 2026, 2:31 PM (GMT -7) |
| Status | confirmed |
| Magnitude | 1.2 |
| Depth | 7.2 km |
| Epicenter | 37.7588°N / 121.9453°W |
| Location | Contra Costa County, California, United States |
| Nearest City | San Ramon (3.7 km / 2.3 miles) |
| Data Source | USGS (United States Geological Survey) |
Nearby Locations
The largest city near the epicenter is San Ramon, with a population of approximately 76,000. Due to the minor magnitude, the earthquake was unlikely to be felt in San Ramon or surrounding areas.
Seismic Activity in the Region
San Ramon is located within the San Ramon Valley in Contra Costa County, California, approximately 34 miles (55 km) east of San Francisco. The region experiences frequent, though generally minor, seismic activity due to its proximity to several fault lines. According to historical data, the area has experienced at least 7 earthquakes of magnitude 6 or greater since 1900, occurring roughly every 15 to 20 years.
Report Your Experience
Did you feel this earthquake? Share your experience and submit a “Felt It” report! Your contribution is valuable to seismic science and risk analysis.
Further Information
For more information about earthquakes in California, please visit the USGS website: https://earthquake.usgs.gov/
