California earthquakes

M1.8 earthquake 11 km NW of Moskowite Corner, California

A magnitude 1.8 earthquake struck 11 km NW of Moskowite Corner, California on Wed, Sep 8, 1982, 12:48 AM PDT (07:48 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.2 5 km WSW of Cobb, 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: 1.8 (Md, duration), micro
Magnitude from: Northern California Seismic System
Local time: Wed, Sep 8, 1982, 12:48 AM PDT
UTC: 1982-09-08 07:48:20 UTC
Depth: -0.7 km (-0.4 mi), shallow
Epicenter: 38.520° N, 122.281° 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
Magnitude uncertainty: ±0.25
Depth from: From location
Station coverage gap: 162°
Stations used: 13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 98 in the 60 days after this one and 52 in the 30 days before it.

After

The first 60 of 98.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1078673. Read Sun, Oct 4, 2026, 6:28 PM UTC.