California earthquakes

M1.8 earthquake 3 km ESE of Berkeley, California

A magnitude 1.8 earthquake struck 3 km ESE of Berkeley, California on Tue, Oct 28, 1980, 2:26 PM PST (22:26 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.2 10 km NE of Milpitas, 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
1.8 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1980-10-28 22:26:37 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
37.864° N, 122.231° 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, 0.7 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
49°
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 81 in the 60 days after this one and 34 in the 30 days before it.

After

The first 60 of 81.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1056602. Read Fri, Oct 2, 2026, 1:49 AM UTC.