M3.0 earthquake 4km ENE of Talmage, CA

A magnitude 3.0 earthquake struck 4km ENE of Talmage, CA on Tue, Aug 31, 2021, 1:20 PM PDT (20:20 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.8 4km ENE of Talmage, CA. This one was a foreshock.

Map

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

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
2.99	ML, local (Richter)	Northern California Seismic System	Preferred · Final · ±0.164 · 30 stations
2.9	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.035 · 106 stations

122 people 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: 186 in the 60 days after this one and 143 in the 30 days before it.

The first 60 of 186.

From the USGS Earthquake Hazards Program and its partner networks, event nc73618506 (also filed as us7000f6dy). Read Sun, Oct 4, 2026, 9:37 AM UTC.