California earthquakes

M2.8 earthquake 24km N of Ridgecrest, CA

A magnitude 2.8 earthquake struck 24km N of Ridgecrest, CA on Tue, Nov 9, 2021, 4:18 AM PST (12:18 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.2 15km SW of Searles Valley, 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
2.8 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-11-09 12:18:32 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
35.838° N, 117.666° W
Felt reports
4
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

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.ScaleComputed byNotes
2.76ML, local (Richter)Southern California Seismic NetworkPreferred · Final · ±0.122 · 92 stations
2.6ML, local (Richter)USGS National Earthquake Information CenterReviewed · ±0.034 · 112 stations

Did you feel it?

4 people reported to the USGS what they felt; the strongest reported shaking was II, weak 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 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
34°
Stations used
36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 141 in the 60 days after this one and 96 in the 30 days before it.

After

The first 60 of 141.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39852735 (also filed as us7000fspb). Read Sun, Oct 4, 2026, 2:56 AM UTC.