California earthquakes

M1.7 earthquake 25 km NE of Soledad, California

A magnitude 1.7 earthquake struck 25 km NE of Soledad, California on Thu, May 19, 1977, 6:39 AM PDT (13:39 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.3 2 km WNW of Biola, 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
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1977-05-19 13:39:42 UTC
Depth
7.0 km (4.3 mi), shallow
Epicenter
36.561° N, 121.103° 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, 0.9 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
86°
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 145 in the 60 days after this one and 75 in the 30 days before it.

After

The first 60 of 145.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1035199. Read Fri, Oct 2, 2026, 10:04 PM UTC.