California earthquakes

M2.2 earthquake 12 km NE of Millville, California

A magnitude 2.2 earthquake struck 12 km NE of Millville, California on Fri, Aug 27, 1982, 3:14 AM PDT (10:14 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.2 2 km W of Hamilton City, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1982-08-27 10:14:04 UTC
Depth
2.5 km (1.6 mi), shallow
Epicenter
40.625° N, 122.064° W
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 1.0 km horizontally, 8.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
157°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 61 in the 60 days after this one and 37 in the 30 days before it.

After

The first 60 of 61.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1078154. Read Sat, Oct 3, 2026, 12:47 PM UTC.