California earthquakes

M3.0 earthquake 5 km NW of Fields Landing, California

A magnitude 3.0 earthquake struck 5 km NW of Fields Landing, California on Sat, Apr 27, 1985, 9:44 PM PST (05:44 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M3.1 19 km SSW of Ferndale, California. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.0 (md), minor
Local time: Sat, Apr 27, 1985, 9:44 PM PST
UTC: 1985-04-28 05:44:27 UTC
Depth: 23.2 km (14.4 mi), shallow
Epicenter: 40.767° N, 124.255° 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 0.6 km horizontally, 1.1 km in depth
Magnitude uncertainty: ±0.15
Depth from: From location
Station coverage gap: 206°, poorly surrounded by stations
Stations used: 12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 48 in the 60 days after this one and 35 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc47741. Read Tue, Sep 22, 2026, 12:08 PM UTC.