M4.9 earthquake 90 km NW of Copiapó, Chile
A magnitude 4.9 earthquake struck 90 km NW of Copiapó, Chile on Sun, Sep 4, 1983, 1:16 PM GMT-4 (17:16 UTC), 57 km (36 mi) below the surface.
A larger quake followed: M7.4 54 km WSW of Diego de Almagro, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1983-09-04 17:16:48 UTC
- Depth
- 57.4 km (35.7 mi), shallow
- Epicenter
- 26.764° S, 70.945° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 12 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.273 km WSW of Diego de Almagro, Chile · 15706 days ago · 30 km deep · 28 km away
- 7.454 km WSW of Diego de Almagro, Chile · 15701 days ago · 15 km deep · 46 km away
- 5.760 km W of Diego de Almagro, Chile · 15701 days ago · 31 km deep · 55 km away
- 5.047 km W of Diego de Almagro, Chile · 15700 days ago · 33 km deep · 55 km away
- 5.0121 km W of Diego de Almagro, Chile · 15699 days ago · 33 km deep · 59 km away
- 5.591 km NW of Copiapó, Chile · 15699 days ago · 20 km deep · 6 km away
- 4.3126 km WNW of Copiapó, Chile · 15698 days ago · 33 km deep · 52 km away
- 6.753 km WNW of Diego de Almagro, Chile · 15696 days ago · 16 km deep · 82 km away
- 5.3100 km WNW of Diego de Almagro, Chile · 15692 days ago · 9 km deep · 65 km away
- 5.096 km NW of Copiapó, Chile · 15691 days ago · 33 km deep · 22 km away
- 4.571 km W of Diego de Almagro, Chile · 15691 days ago · 33 km deep · 38 km away
- 5.256 km WNW of Diego de Almagro, Chile · 15688 days ago · 33 km deep · 84 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001y4y. Read Tue, Sep 29, 2026, 10:26 AM UTC.