California earthquakes

M1.8 earthquake 21 km NE of Soledad, California

A magnitude 1.8 earthquake struck 21 km NE of Soledad, California on Wed, Jan 11, 1978, 6:55 AM PST (14:55 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.4 21 km NNE of Soledad, 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
1978-01-11 14:55:38 UTC
Depth
5.7 km (3.5 mi), shallow
Epicenter
36.537° N, 121.126° 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
±0.08
Depth from
From location
Station coverage gap
59°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 141 in the 60 days after this one and 82 in the 30 days before it.

After

The first 60 of 141.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1038540. Read Mon, Sep 28, 2026, 11:07 AM UTC.