California earthquakes

M1.6 earthquake 23 km ENE of Soledad, California

A magnitude 1.6 earthquake struck 23 km ENE of Soledad, California on Mon, May 4, 1987, 3:01 PM PDT (22:01 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M1.9 23 km ENE 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
1.6 (md), micro
Local time
UTC
1987-05-04 22:01:26 UTC
Depth
4.3 km (2.7 mi), shallow
Epicenter
36.502° N, 121.081° 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, 1.1 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
119°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 125 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 125.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc99813. Read Tue, Sep 22, 2026, 11:33 AM UTC.