California earthquakes

M2.1 earthquake 11 km ESE of Sunol, California

A magnitude 2.1 earthquake struck 11 km ESE of Sunol, California on Mon, Nov 5, 1979, 7:41 AM PST (15:41 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.2 5 km NE of Chinatown, 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
2.1 (md), micro
Local time
UTC
1979-11-05 15:41:55 UTC
Depth
7.8 km (4.8 mi), shallow
Epicenter
37.552° N, 121.769° 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 0.2 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
70°
Stations used
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 142 in the 60 days after this one and 28 in the 30 days before it.

After

The first 60 of 142.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1048649. Read Tue, Sep 22, 2026, 10:28 PM UTC.