California earthquakes

M1.9 earthquake 8 km SSE of Markleeville, California

A magnitude 1.9 earthquake struck 8 km SSE of Markleeville, California on Wed, Aug 15, 1979, 12:18 AM PDT (07:18 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.6 14 km SE of Walker, California. 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
1.9 (ma), micro
Local time
UTC
1979-08-15 07:18:54 UTC
Depth
7.6 km (4.7 mi), shallow
Epicenter
38.624° N, 119.735° 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 0.7 km horizontally, 6.5 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
289°, poorly surrounded by stations
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 66 in the 60 days after this one and 9 in the 30 days before it.

After

The first 60 of 66.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1047228. Read Tue, Sep 22, 2026, 4:50 PM UTC.