California earthquakes

M1.6 earthquake 5 km NW of Moskowite Corner, California

A magnitude 1.6 earthquake struck 5 km NW of Moskowite Corner, California on Mon, Nov 30, 1981, 9:32 AM PST (17:32 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.5 16 km E of Lower Lake, 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: 1.6 (Md, duration), micro
Magnitude from: Northern California Seismic System
Local time: Mon, Nov 30, 1981, 9:32 AM PST
UTC: 1981-11-30 17:32:04 UTC
Depth: 10.7 km (6.7 mi), shallow
Epicenter: 38.475° N, 122.233° 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 0.6 km horizontally, 3.1 km in depth
Magnitude uncertainty: ±0.27
Depth from: From location
Station coverage gap: 140°
Stations used: 7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 169 in the 60 days after this one and 52 in the 30 days before it.

After

The first 60 of 169.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1069867. Read Sun, Oct 4, 2026, 7:47 AM UTC.