California earthquakes

M2.3 earthquake 6km NNE of Beaumont, CA

A magnitude 2.3 earthquake struck 6km NNE of Beaumont, CA on Mon, Aug 16, 2021, 9:28 PM PDT (04:28 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M3.4 10km NNW of Anza, CA. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.3 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-08-17 04:28:36 UTC
Depth
16.1 km (10.0 mi), shallow
Epicenter
33.978° N, 116.965° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
26°
Stations used
108

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 108 in the 60 days after this one and 54 in the 30 days before it.

After

The first 60 of 108.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39775271. Read Sun, Oct 4, 2026, 6:39 AM UTC.