California earthquakes

M1.7 earthquake 11 km NE of Phillipsville, California

A magnitude 1.7 earthquake struck 11 km NE of Phillipsville, California on Thu, Sep 2, 1982, 9:59 PM PDT (04:59 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M2.4 10 km WSW of Douglas City, 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: 1.7 (md), micro
Local time: Thu, Sep 2, 1982, 9:59 PM PDT
UTC: 1982-09-03 04:59:38 UTC
Depth: 25.6 km (15.9 mi), shallow
Epicenter: 40.292° N, 123.705° 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 0.5 km horizontally, 0.7 km in depth
Magnitude uncertainty: ±0.19
Depth from: From location
Station coverage gap: 76°
Stations used: 19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 117 in the 60 days after this one and 53 in the 30 days before it.

After

The first 60 of 117.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1078479. Read Wed, Sep 23, 2026, 4:19 AM UTC.