M4.8 earthquake 11 km SW of Mapastepec, Mexico
A magnitude 4.8 earthquake struck 11 km SW of Mapastepec, Mexico on Fri, Apr 20, 1979, 1:22 PM CST (19:22 UTC), 88 km (55 mi) below the surface.
A larger quake followed: M5.7 13 km S of Manuel Ávila Camacho (Ponte Duro), Mexico. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1979-04-20 19:22:50 UTC
- Depth
- 88.0 km (54.7 mi), intermediate-depth
- Epicenter
- 15.348° N, 92.966° 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 62
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayMexico earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001063. Read Wed, Sep 23, 2026, 1:49 AM UTC.