California earthquakes

M2.3 earthquake 5 km SSE of Swall Meadows, California

A magnitude 2.3 earthquake struck 5 km SSE of Swall Meadows, California on Mon, Mar 25, 1985, 8:16 AM PST (16:16 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M2.9 11 km E of Mammoth Lakes, 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: 2.3 (md), micro
Local time: Mon, Mar 25, 1985, 8:16 AM PST
UTC: 1985-03-25 16:16:07 UTC
Depth: 7.2 km (4.5 mi), shallow
Epicenter: 37.465° N, 118.618° 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 0.2 km horizontally, 0.6 km in depth
Magnitude uncertainty: ±0.25
Depth from: From location
Station coverage gap: 52°
Stations used: 35

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 nc44673 (also filed as ci61354, usp0002d6u). Read Tue, Sep 22, 2026, 12:17 PM UTC.