California earthquakes

M2.0 earthquake 6km NE of Cabazon, CA

A magnitude 2.0 earthquake struck 6km NE of Cabazon, CA on Sat, Mar 4, 1978, 9:07 AM PST (17:07 UTC), 17 km (10 mi) below the surface.

A larger quake followed: M2.1 2km SSE of Big Bear Lake, CA. This one was a foreshock.

Cabazon forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.0 (mc), micro
Local time
UTC
1978-03-04 17:07:09 UTC
Depth
16.8 km (10.4 mi), shallow
Epicenter
33.955° N, 116.744° 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, 0.8 km in depth
Depth from
From location
Station coverage gap
43°
Stations used
21

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 0 in the 30 days before it.

After

The first 60 of 160.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3337701. Read Tue, Sep 22, 2026, 5:21 PM UTC.