California earthquakes

M2.0 earthquake 5 km SSE of Swall Meadows, California

A magnitude 2.0 earthquake struck 5 km SSE of Swall Meadows, California on Sat, May 4, 1985, 11:29 AM PDT (18:29 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.3 25 km E of Mono City, 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: Sat, May 4, 1985, 11:29 AM PDT
UTC: 1985-05-04 18:29:05 UTC
Depth: 10.4 km (6.5 mi), shallow
Epicenter: 37.468° N, 118.612° 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 0.4 km horizontally, 0.9 km in depth
Magnitude uncertainty: ±0.25
Depth from: From location
Station coverage gap: 80°
Stations used: 26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc47251 (also filed as ci65645). Read Tue, Sep 22, 2026, 8:49 PM UTC.