California earthquakes

M1.9 earthquake 16 km NE of Upper Lake, California

A magnitude 1.9 earthquake struck 16 km NE of Upper Lake, California on Tue, Oct 5, 1982, 1:19 AM PDT (08:19 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.1 7 km WSW of Cobb, 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
1.9 (md), micro
Local time
UTC
1982-10-05 08:19:01 UTC
Depth
4.6 km (2.9 mi), shallow
Epicenter
39.287° N, 122.797° 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 0.3 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
72°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 138 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 138.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1079967. Read Tue, Sep 22, 2026, 9:29 PM UTC.