California earthquakes

M1.9 earthquake 8km NE of Buttonwillow, CA

A magnitude 1.9 earthquake struck 8km NE of Buttonwillow, CA on Mon, Apr 25, 1983, 11:11 PM PDT (06:11 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.8 12km W of Avenal, CA. 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 (mh), micro
Local time
UTC
1983-04-26 06:11:14 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
35.458° N, 119.414° 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 1.4 km horizontally, 16.3 km in depth
Magnitude uncertainty
±0.65
Depth from
Operator assigned
Station coverage gap
223°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 176 in the 60 days after this one and 30 in the 30 days before it.

After

The first 60 of 176.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci12327203. Read Wed, Sep 30, 2026, 11:28 PM UTC.