M4.0 earthquake 32 km SSW of Petatlán, Mexico
A magnitude 4.0 earthquake struck 32 km SSW of Petatlán, Mexico on Mon, Apr 30, 1979, 12:01 AM CST (06:01 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 1979-04-30 06:01:01 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 17.272° N, 101.388° 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
- OPERATOR_ASSIGNED
- 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: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayMexico earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00010cf. Read Mon, Sep 28, 2026, 6:57 AM UTC.