M1.6 earthquake 11 km SE of Sunol, CA

A magnitude 1.6 earthquake struck 11 km SE of Sunol, CA on Thu, Aug 27, 2026, 1:08 AM PDT (08:08 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M1.7 1 km SE of Pacifica, CA. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS. If you felt it, tell the USGS: every report sharpens the shaking map.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 49 since this one and 41 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event nc75425877. Read Tue, Sep 22, 2026, 12:12 PM UTC.