M4.3 earthquake 90 km W of Copiapó, Chile
A magnitude 4.3 earthquake struck 90 km W of Copiapó, Chile on Sat, Apr 24, 2021, 2:14 PM GMT-4 (18:14 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M4.4 106 km NNW of Vallenar, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-04-24 18:14:19 UTC
- Depth
- 34.8 km (21.6 mi), shallow
- Epicenter
- 27.526° S, 71.231° W
- Region
- Chile
- Felt reports
- 2
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
2 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Oblique reverse
- Moment magnitude
- 4.3 Mwr
- Nodal plane 1
- Strike 17°, dip 29°, rake 129°
- Nodal plane 2
- Strike 153°, dip 68°, rake 70°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.9 km horizontally, 6.1 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 147°
- Stations used
- 67
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.4106 km NNW of Vallenar, Chile · 1974 days ago · 56 km deep · 28 km away · felt by 1
- 4.167 km WNW of Copiapó, Chile · 1956 days ago · 54 km deep · 56 km away · felt by 2
- 4.093 km NW of Vallenar, Chile · 1944 days ago · 17 km deep · 65 km away · felt by 1
- 4.353 km N of Vallenar, Chile · 1942 days ago · 50 km deep · 77 km away · felt by 1
- 4.0114 km NW of Vallenar, Chile · 1940 days ago · 15 km deep · 45 km away
- 4.3111 km NW of Vallenar, Chile · 1938 days ago · 10 km deep · 47 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000e4fb. Read Sun, Oct 4, 2026, 9:14 AM UTC.