California earthquakes

M1.5 earthquake 9 km WNW of Cleone, California

A magnitude 1.5 earthquake struck 9 km WNW of Cleone, California on Fri, Sep 12, 1986, 6:22 PM PDT (01:22 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M1.7 3 km WNW of Nice, California. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
1986-09-13 01:22:21 UTC
Depth
10.5 km (6.5 mi), shallow
Epicenter
39.523° N, 123.892° 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 5.5 km horizontally, 3.0 km in depth
Magnitude uncertainty
±0.02
Depth from
From location
Station coverage gap
301°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 52 in the 60 days after this one and 15 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1143375. Read Tue, Sep 22, 2026, 10:25 PM UTC.