M4.3 earthquake 70 km WNW of Copiapó, Chile
A magnitude 4.3 earthquake struck 70 km WNW of Copiapó, Chile on Fri, Aug 6, 2021, 12:18 AM GMT-4 (04:18 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.6 86 km WSW of Copiapó, 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 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-08-06 04:18:47 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 27.142° S, 70.999° 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.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.6 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.22
- Depth from
- Operator assigned
- Station coverage gap
- 178°
- Stations used
- 35
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
- 4.376 km NW of Vallenar, Chile · 1879 days ago · 43 km deep · 98 km away
- 5.686 km WSW of Copiapó, Chile · 1859 days ago · 28 km deep · 66 km away · felt by 22
- 4.685 km W of Diego de Almagro, Chile · 1844 days ago · 21 km deep · 96 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000f2n7. Read Sun, Oct 4, 2026, 9:14 AM UTC.