California earthquakes

M3.1 earthquake 22km WNW of Imperial, CA

A magnitude 3.1 earthquake struck 22km WNW of Imperial, CA on Wed, Mar 27, 1968, 12:32 AM GMT-8 (08:32 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.7 4km E of Ocotillo Wells, 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
3.1 (ml), minor
Local time
UTC
1968-03-27 08:32:42 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
32.899° N, 115.794° 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 1.4 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.17
Depth from
Operator assigned
Station coverage gap
175°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 160 in the 60 days after this one and 3 in the 30 days before it.

After

The first 60 of 160.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3329113. Read Tue, Sep 22, 2026, 10:54 AM UTC.