Mexico earthquakes

M2.4 earthquake 33km E of Ensenada, B.C., MX

A magnitude 2.4 earthquake struck 33km E of Ensenada, B.C., MX on Fri, Aug 4, 1978, 11:37 PM PDT (06:37 UTC), 6 km (4 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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The earthquake

Magnitude: 2.4 (Mh), micro
Magnitude from: Southern California Seismic Network
Local time: Fri, Aug 4, 1978, 11:37 PM PDT
UTC: 1978-08-05 06:37:23 UTC
Depth: 6.0 km (3.7 mi), shallow
Epicenter: 31.925° N, 116.278° 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 2.6 km horizontally, 31.6 km in depth
Magnitude uncertainty: ±0.25
Depth from: Operator assigned
Station coverage gap: 269°, poorly surrounded by stations
Stations used: 9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 44 in the 60 days after this one and 24 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci10011738. Read Fri, Oct 2, 2026, 4:26 AM UTC.