California earthquakes

M1.8 earthquake 2 km WNW of Fremont, California

A magnitude 1.8 earthquake struck 2 km WNW of Fremont, California on Wed, Mar 10, 1982, 5:06 AM PST (13:06 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.3 4 km W of San Juan Bautista, 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), micro
Local time
UTC
1982-03-10 13:06:50 UTC
Depth
6.9 km (4.3 mi), shallow
Epicenter
37.554° N, 122.016° 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
±0.21
Depth from
From location
Station coverage gap
35°
Stations used
60

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 122 in the 60 days after this one and 58 in the 30 days before it.

After

The first 60 of 122.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1072802. Read Tue, Sep 29, 2026, 3:25 PM UTC.