California earthquakes

M2.7 earthquake 15km NE of Anza, CA

A magnitude 2.7 earthquake struck 15km NE of Anza, CA on Fri, Jan 21, 1949, 4:23 AM GMT-8 (12:23 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.0 10km W of Aguanga, CA. This one was a foreshock.

Anza forecastMore in California

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
2.7 (ml), micro
Local time
UTC
1949-01-21 12:23:02 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
33.634° N, 116.548° 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 8.3 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
354°, poorly surrounded by stations
Stations used
3

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 40 in the 60 days after this one and 30 in the 30 days before it.

After

Before

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3356198. Read Tue, Sep 22, 2026, 10:31 AM UTC.