California earthquakes

M3.4 earthquake 18 km NNE of Soledad, California

A magnitude 3.4 earthquake struck 18 km NNE of Soledad, California on Fri, Nov 4, 1977, 7:13 AM PST (15:13 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.2 21 km NNE of Soledad, California. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.4 (ML, local (Richter)), minor
Magnitude from
Northern California Seismic System
Local time
UTC
1977-11-04 15:13:36 UTC
Depth
6.6 km (4.1 mi), shallow
Epicenter
36.568° N, 121.214° 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, 2.1 km in depth
Depth from
From location
Station coverage gap
112°
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: 186 in the 60 days after this one and 105 in the 30 days before it.

After

The first 60 of 186.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1037564. Read Thu, Oct 1, 2026, 5:27 PM UTC.