California earthquakes

M2.1 earthquake 28 km ENE of Soledad, California

A magnitude 2.1 earthquake struck 28 km ENE of Soledad, California on Wed, Jun 18, 1975, 4:38 AM PDT (11:38 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M4.9 7 km SW of Three Rocks, 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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1975-06-18 11:38:54 UTC
Depth
11.7 km (7.2 mi), shallow
Epicenter
36.567° N, 121.061° 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 1.3 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.43
Depth from
From location
Station coverage gap
183°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 188 in the 60 days after this one and 165 in the 30 days before it.

After

The first 60 of 188.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1024413. Read Thu, Oct 1, 2026, 10:01 AM UTC.