California earthquakes

M2.1 earthquake 12km ENE of Joshua Tree, CA

A magnitude 2.1 earthquake struck 12km ENE of Joshua Tree, CA on Thu, Apr 23, 1987, 3:50 AM PDT (10:50 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 8km N of Big Bear Lake, CA. This one was a foreshock.

Joshua Tree forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.1 (mc), micro
Local time
UTC
1987-04-23 10:50:37 UTC
Depth
9.9 km (6.1 mi), shallow
Epicenter
34.178° N, 116.200° 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
109°
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: 189 in the 60 days after this one and 151 in the 30 days before it.

After

The first 60 of 189.

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci721069. Read Wed, Sep 30, 2026, 6:10 PM UTC.