California earthquakes

M2.2 earthquake 11 km NE of Phillipsville, California

A magnitude 2.2 earthquake struck 11 km NE of Phillipsville, California on Sat, May 10, 1986, 2:26 PM PDT (21:26 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M2.4 5 km E of Hydesville, 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: Sat, May 10, 1986, 2:26 PM PDT
UTC: 1986-05-10 21:26:22 UTC
Depth: 22.6 km (14.1 mi), shallow
Epicenter: 40.292° N, 123.698° 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, 0.9 km in depth
Magnitude uncertainty: ±0.20
Depth from: From location
Station coverage gap: 76°
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: 34 in the 60 days after this one and 27 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1138229. Read Wed, Sep 23, 2026, 12:52 AM UTC.