M4.4 earthquake 31 km SSW of Copala, Mexico
A magnitude 4.4 earthquake struck 31 km SSW of Copala, Mexico on Sat, Apr 23, 1983, 8:11 PM CST (02:11 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.9 5 km NE of Pochotillo, Mexico. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 1983-04-24 02:11:40 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.365° N, 99.132° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.95 km NE of Pochotillo, Mexico · 15833 days ago · 33 km deep · 81 km away
- 4.54 km NNE of Tutepec, Mexico · 15827 days ago · 33 km deep · 65 km away
- 3.811 km SW of Barra de Tecoanapa, Mexico · 15814 days ago · 33 km deep · 36 km away
Before
Earthquakes todayMexico earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001uqp. Read Wed, Sep 30, 2026, 9:21 PM UTC.