California earthquakes

M1.9 earthquake 8 km SE of Avenal, California

A magnitude 1.9 earthquake struck 8 km SE of Avenal, California on Sun, Oct 27, 1985, 9:56 PM PST (05:56 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.1 7 km SE of Avenal, 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
1.9 (md), micro
Local time
UTC
1985-10-28 05:56:47 UTC
Depth
7.8 km (4.9 mi), shallow
Epicenter
35.946° N, 120.076° 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
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
182°, poorly surrounded by stations
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 67 in the 30 days before it.

After

The first 60 of 127.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc57809 (also filed as ci130353). Read Tue, Sep 22, 2026, 3:14 PM UTC.