California earthquakes

M1.5 earthquake 7km NNE of Cabazon, CA

A magnitude 1.5 earthquake struck 7km NNE of Cabazon, CA on Sun, Oct 8, 1978, 7:33 AM PDT (14:33 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M4.3 12km SSW 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
1.5 (mh), micro
Local time
UTC
1978-10-08 14:33:59 UTC
Depth
18.5 km (11.5 mi), shallow
Epicenter
33.976° N, 116.749° 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 0.5 km horizontally, 0.8 km in depth
Depth from
From location
Station coverage gap
112°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 153 in the 60 days after this one and 150 in the 30 days before it.

After

The first 60 of 153.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3342853. Read Tue, Sep 29, 2026, 10:30 AM UTC.