California earthquakes

M1.9 earthquake 5 km WNW of Fields Landing, California

A magnitude 1.9 earthquake struck 5 km WNW of Fields Landing, California on Mon, Jun 15, 1981, 2:39 PM PDT (21:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.6 23 km WSW of Weott, 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: Mon, Jun 15, 1981, 2:39 PM PDT
UTC: 1981-06-15 21:39:46 UTC
Depth: 10.4 km (6.5 mi), shallow
Epicenter: 40.738° N, 124.279° W
Region: California
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 0.7 km horizontally, 0.9 km in depth
Depth from: From location
Station coverage gap: 211°, poorly surrounded by stations
Stations used: 8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 148 in the 60 days after this one and 91 in the 30 days before it.

After

The first 60 of 148.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1064589. Read Mon, Sep 28, 2026, 1:42 AM UTC.