California earthquakes

M1.5 earthquake 29 km E of Herlong, California

A magnitude 1.5 earthquake struck 29 km E of Herlong, California on Tue, Aug 31, 2021, 3:13 AM PDT (10:13 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.1 14km SSW of Loyalton, CA. This one was a foreshock.

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

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The earthquake

Magnitude
1.5 (ML, local (Richter)), micro
Magnitude from
Nevada Seismological Laboratory
Local time
UTC
2021-08-31 10:13:39 UTC
Depth
6.4 km (4.0 mi), shallow
Epicenter
40.182° N, 119.797° 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.

Magnitude uncertainty
±0.25
Station coverage gap
229°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 5 in the 30 days before it.

After

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nn00820647. Read Sat, Oct 3, 2026, 8:24 PM UTC.