California earthquakes

M2.8 earthquake 4km ESE of Anza, CA

A magnitude 2.8 earthquake struck 4km ESE of Anza, CA on Thu, Apr 14, 1949, 6:33 PM GMT-8 (02:33 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.0 11km N of Thousand Palms, CA. 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
2.8 (ml), micro
Local time
UTC
1949-04-15 02:33:36 UTC
Depth
0.4 km (0.2 mi), shallow
Epicenter
33.538° N, 116.635° 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 3.3 km horizontally, 4.6 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
279°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 94 in the 60 days after this one and 14 in the 30 days before it.

After

The first 60 of 94.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3356134. Read Tue, Sep 22, 2026, 11:19 AM UTC.