California earthquakes

M1.6 earthquake 31km W of Olancha, CA

A magnitude 1.6 earthquake struck 31km W of Olancha, CA on Mon, Mar 25, 1985, 2:04 AM PST (10:04 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.4 17km NNE of Inyokern, 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
1.6 (Mc), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1985-03-25 10:04:40 UTC
Depth
3.9 km (2.4 mi), shallow
Epicenter
36.311° N, 118.353° 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
From location
Station coverage gap
285°, 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: 51 in the 60 days after this one and 20 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci61323. Read Thu, Oct 1, 2026, 8:37 PM UTC.