California earthquakes

M2.5 earthquake 10km NW of Grapevine, CA

A magnitude 2.5 earthquake struck 10km NW of Grapevine, CA on Tue, Apr 16, 1985, 9:30 PM PST (05:30 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.4 16km SE of Buttonwillow, 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
2.5 (mc), micro
Local time
UTC
1985-04-17 05:30:21 UTC
Depth
16.5 km (10.2 mi), shallow
Epicenter
35.010° N, 118.997° 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
92°
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: 56 in the 60 days after this one and 31 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci64493. Read Tue, Sep 22, 2026, 8:26 PM UTC.