California earthquakes

M2.7 earthquake 13km NW of Grapevine, CA

A magnitude 2.7 earthquake struck 13km NW of Grapevine, CA on Wed, Oct 12, 1983, 11:10 PM PDT (06:10 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M3.2 17km NNW of Grapevine, 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
2.7 (ml), micro
Local time
UTC
1983-10-13 06:10:55 UTC
Depth
18.0 km (11.2 mi), shallow
Epicenter
35.039° N, 119.019° 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 0.5 km horizontally, 1.4 km in depth
Depth from
From location
Station coverage gap
88°
Stations used
41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 87 in the 60 days after this one and 101 in the 30 days before it.

After

The first 60 of 87.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci18265. Read Thu, Oct 1, 2026, 1:11 AM UTC.