California earthquakes

M2.0 earthquake 15 km NNW of Moskowite Corner, California

A magnitude 2.0 earthquake struck 15 km NNW of Moskowite Corner, California on Wed, Aug 28, 1985, 11:00 AM PDT (18:00 UTC), 15 km (10 mi) below the surface.

A larger quake followed: M2.1 3 km W of Glen Ellen, 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: 2.0 (md), micro
Local time: Wed, Aug 28, 1985, 11:00 AM PDT
UTC: 1985-08-28 18:00:58 UTC
Depth: 15.4 km (9.5 mi), shallow
Epicenter: 38.575° N, 122.243° 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 1.2 km horizontally, 3.0 km in depth
Magnitude uncertainty: ±0.18
Depth from: From location
Station coverage gap: 126°
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: 169 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 169.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc54078. Read Tue, Sep 22, 2026, 8:49 PM UTC.