California earthquakes

M1.7 earthquake 22km ESE of Ridgecrest, CA

A magnitude 1.7 earthquake struck 22km ESE of Ridgecrest, CA on Tue, Aug 10, 2021, 12:57 AM PDT (07:57 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.0 13km SE of Bodfish, CA. This one was a foreshock.

Ridgecrest forecastMore in California

Map

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

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The earthquake

Magnitude
1.7 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2021-08-10 07:57:42 UTC
Depth
8.2 km (5.1 mi), shallow
Epicenter
35.536° N, 117.450° 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 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 0.3 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
102°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 146 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 146.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci39769295. Read Sun, Oct 4, 2026, 10:22 AM UTC.