California earthquakes

M1.6 earthquake 9km NNW of Grapevine, CA

A magnitude 1.6 earthquake struck 9km NNW of Grapevine, CA on Fri, May 3, 1985, 5:10 PM PDT (00:10 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.2 18km SSE of Carpinteria, CA. 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 (mc), micro
Local time
UTC
1985-05-04 00:10:39 UTC
Depth
9.7 km (6.0 mi), shallow
Epicenter
35.013° N, 118.972° 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.

Depth from
From location
Station coverage gap
114°
Stations used
0

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 59 in the 60 days after this one and 28 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci65537. Read Tue, Sep 22, 2026, 4:10 PM UTC.