California earthquakes

M2.8 earthquake 14 km NNE of Big Pine, California

A magnitude 2.8 earthquake struck 14 km NNE of Big Pine, California on Wed, Aug 20, 1986, 9:52 PM PDT (04:52 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.3 37 km S of Goldfield, Nevada. 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 (md), micro
Local time
UTC
1986-08-21 04:52:19 UTC
Depth
8.4 km (5.2 mi), shallow
Epicenter
37.273° N, 118.205° 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 0.4 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.25
Depth from
From location
Station coverage gap
254°, poorly surrounded by stations
Stations used
42

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc79772 (also filed as ci707542). Read Wed, Sep 23, 2026, 1:01 AM UTC.