California earthquakes

M2.7 earthquake 2km W of Devore, CA

A magnitude 2.7 earthquake struck 2km W of Devore, CA on Sun, Aug 13, 1978, 2:48 PM PDT (21:48 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M2.8 6km NNE of Green Acres, CA. 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
2.7 (ml), micro
Local time
UTC
1978-08-13 21:48:49 UTC
Depth
11.1 km (6.9 mi), shallow
Epicenter
34.219° N, 117.427° 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 0.3 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.41
Depth from
From location
Station coverage gap
34°
Stations used
55

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 127.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci10012258. Read Wed, Sep 23, 2026, 10:14 AM UTC.