California earthquakes

M2.1 earthquake 20km NW of Tehachapi, CA

A magnitude 2.1 earthquake struck 20km NW of Tehachapi, CA on Thu, Sep 16, 2021, 6:09 PM PDT (01:09 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.7 14km W of Mojave, 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
2.1 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-09-17 01:09:00 UTC
Depth
5.3 km (3.3 mi), shallow
Epicenter
35.278° N, 118.573° W
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.2 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
37°
Stations used
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and 28 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39811327. Read Sat, Oct 3, 2026, 4:14 PM UTC.