California earthquakes

M2.2 earthquake 4 km SSE of Swall Meadows, California

A magnitude 2.2 earthquake struck 4 km SSE of Swall Meadows, California on Thu, Oct 24, 1985, 6:43 PM PDT (01:43 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.5 15 km ESE of Bridgeport, 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: 2.2 (md), micro
Local time: Thu, Oct 24, 1985, 6:43 PM PDT
UTC: 1985-10-25 01:43:58 UTC
Depth: 10.3 km (6.4 mi), shallow
Epicenter: 37.470° N, 118.625° 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 0.3 km horizontally, 0.7 km in depth
Magnitude uncertainty: ±0.37
Depth from: From location
Station coverage gap: 53°
Stations used: 32

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 127 in the 60 days after this one and 53 in the 30 days before it.

After

The first 60 of 127.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc57621 (also filed as ci127220). Read Sun, Sep 27, 2026, 2:57 AM UTC.