California earthquakes

M2.8 earthquake 5km NNE of Mammoth Lakes, CA

A magnitude 2.8 earthquake struck 5km NNE of Mammoth Lakes, CA on Thu, Jul 9, 1981, 10:11 AM PDT (17:11 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.9 California-Nevada border region. 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
2.8 (mc), micro
Local time
UTC
1981-07-09 17:11:54 UTC
Depth
3.9 km (2.4 mi), shallow
Epicenter
37.678° N, 118.964° 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.

Depth from
Operator assigned
Station coverage gap
139°
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 167 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci519821. Read Wed, Sep 30, 2026, 6:27 PM UTC.