California earthquakes

M1.7 earthquake 26km ENE of Pine Valley, CA

A magnitude 1.7 earthquake struck 26km ENE of Pine Valley, CA on Thu, Dec 8, 1983, 6:31 AM PST (14:31 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.5 26km SSW of Ocotillo Wells, CA. This one was a foreshock.

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

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The earthquake

Magnitude
1.7 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1983-12-08 14:31:25 UTC
Depth
2.5 km (1.6 mi), shallow
Epicenter
32.943° N, 116.297° 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, 1.7 km in depth
Depth from
From location
Station coverage gap
97°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 192 in the 60 days after this one and 196 in the 30 days before it.

After

The first 60 of 192.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci26751. Read Thu, Oct 1, 2026, 5:16 AM UTC.