M 3.3 Earthquake Recorded Near San Ramon, California

Earthquakes low USGS · · Northern California

A minor magnitude 3.3 earthquake occurred southeast of San Ramon, California, on March 2, 2026. The shallow event was centered at a depth of approximately 8.4 kilometers.

What Happened

A minor earthquake with a magnitude of 3.27 ml occurred on March 2, 2026, at 07:21 UTC (March 1, 2026, at 11:21 PM local time). The event was centered 4 kilometers southeast of San Ramon, California, at a shallow depth of 8.44 kilometers.

Location Details

The earthquake’s epicenter was located at coordinates 37.755°N and 121.938°W. The depth of 8.44 kilometers is classified as shallow; earthquakes occurring at depths of less than 20 kilometers are typically more likely to be felt by residents near the epicenter than deeper events.

Impact Assessment

According to the USGS, there is no tsunami advisory, watch, or warning in effect for this event. No felt reports were officially recorded in the source data at the time of this report, and no alert level color has been assigned. Given the magnitude, significant damage is not expected.

What You Should Know

Earthquakes with magnitudes between 2.5 and 3.9 are classified as minor. While these events are often felt by people in the immediate vicinity, they rarely cause structural damage. Residents in seismic zones are encouraged to remain prepared for potential aftershocks, which are common following any seismic event.

Source

Information provided by the USGS Earthquake Hazards Program.

Source: USGS Official Notice