Mexico earthquakes

M3.4 earthquake 10km SW of Ensenada, B.C., MX

A magnitude 3.4 earthquake struck 10km SW of Ensenada, B.C., MX on Fri, Dec 4, 1981, 5:53 AM PST (13:53 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M4.3 48 km ENE of San Vicente, Mexico. 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
3.4 (ml), minor
Local time
UTC
1981-12-04 13:53:55 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
31.807° N, 116.691° W
Region
Mexico
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 1.6 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
289°, poorly surrounded by stations
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 42 in the 60 days after this one and 34 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci102606 (also filed as usp0001h8m). Read Tue, Sep 22, 2026, 8:10 PM UTC.