M2.3 earthquake 10km NE of Mexicali, B.C., MX

A magnitude 2.3 earthquake struck 10km NE of Mexicali, B.C., MX on Tue, Mar 31, 1981, 4:42 AM PST (12:42 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M5.8 The 1981 Westmorland, California Earthquake. This one was a foreshock.

Map

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

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 197 in the 60 days after this one and 52 in the 30 days before it.

The first 60 of 197.

From the USGS Earthquake Hazards Program and its partner networks, event ci12263111. Read Tue, Sep 29, 2026, 11:55 PM UTC.