Mexico earthquakes

M2.3 earthquake 38km ENE of Ensenada, B.C., MX

A magnitude 2.3 earthquake struck 38km ENE of Ensenada, B.C., MX on Fri, Jul 21, 1978, 7:33 AM PDT (14:33 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M4.1 74 km SW of Ejido Doctor Alberto Oviedo Mota (El Indiviso), 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: 2.3 (mh), micro
Local time: Fri, Jul 21, 1978, 7:33 AM PDT
UTC: 1978-07-21 14:33:11 UTC
Depth: 0.3 km (0.2 mi), shallow
Epicenter: 31.957° N, 116.228° 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 4.4 km horizontally, 7.6 km in depth
Magnitude uncertainty: ±0.21
Depth from: From location
Station coverage gap: 302°, poorly surrounded by stations
Stations used: 7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 45 in the 60 days after this one and 23 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3340846. Read Wed, Sep 30, 2026, 6:04 PM UTC.