California earthquakes

M2.1 earthquake 19km W of Olancha, CA

A magnitude 2.1 earthquake struck 19km W of Olancha, CA on Sun, Nov 3, 1985, 1:46 PM PST (21:46 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.5 19km WSW of Olancha, 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
2.1 (mc), micro
Local time
UTC
1985-11-03 21:46:02 UTC
Depth
4.8 km (3.0 mi), shallow
Epicenter
36.280° N, 118.221° 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.

Depth from
Operator assigned
Station coverage gap
270°, poorly surrounded by stations
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 109 in the 60 days after this one and 35 in the 30 days before it.

After

The first 60 of 109.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci130772. Read Tue, Sep 22, 2026, 10:31 PM UTC.