Mexico earthquakes

M2.7 earthquake 5km SE of Delta, B.C., MX

A magnitude 2.7 earthquake struck 5km SE of Delta, B.C., MX on Mon, Aug 21, 1978, 4:53 AM PDT (11:53 UTC), 10 km (6 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.

Ciudad Guadalupe Victoria forecast More in Mexico

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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: 2.7 (ml), micro
Local time: Mon, Aug 21, 1978, 4:53 AM PDT
UTC: 1978-08-21 11:53:15 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 32.324° N, 115.153° 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 4.6 km horizontally, 31.6 km in depth
Magnitude uncertainty: ±0.25
Depth from: Operator assigned
Station coverage gap: 221°, poorly surrounded by stations
Stations used: 16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 99 in the 60 days after this one and 79 in the 30 days before it.

After

The first 60 of 99.

Before

Earthquakes today Mexico earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3341221. Read Wed, Sep 30, 2026, 10:32 AM UTC.