M2.1 earthquake 13km E of Angwin, CA

A magnitude 2.1 earthquake struck 13km E of Angwin, CA on Wed, Feb 24, 2021, 3:12 AM PST (11:12 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.0 3km SW of Anderson Springs, CA. This one was a foreshock.

Map

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

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 169 in the 60 days after this one and 94 in the 30 days before it.

The first 60 of 169.

From the USGS Earthquake Hazards Program and its partner networks, event nc73527091. Read Sun, Oct 4, 2026, 12:17 PM UTC.