M3.9 earthquake 83 km NNE of Tocopilla, Chile
A magnitude 3.9 earthquake struck 83 km NNE of Tocopilla, Chile on Thu, Oct 22, 2020, 6:07 PM GMT-3 (21:07 UTC), 53 km (33 mi) below the surface.
A larger quake followed: M4.3 134 km N of Calama, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-10-22 21:07:12 UTC
- Depth
- 53.1 km (33.0 mi), shallow
- Epicenter
- 21.383° S, 69.912° 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.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.5 km horizontally, 4.3 km in depth
- Magnitude uncertainty
- ±0.36
- Depth from
- From location
- Station coverage gap
- 147°
- Stations used
- 27
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 4 in the 30 days before it.
After
- 4.086 km NNE of Tocopilla, Chile · 2165 days ago · 54 km deep · 3 km away · felt by 1
- 4.3134 km N of Calama, Chile · 2147 days ago · 128 km deep · 96 km away
- 3.967 km SSW of Iquique, Chile · 2119 days ago · 70 km deep · 78 km away · felt by 11
Before
- 4.239 km NW of Tocopilla, Chile · 2179 days ago · 24 km deep · 77 km away
- 4.220 km NE of Tocopilla, Chile · 2181 days ago · 72 km deep · 64 km away
- 4.082 km NNE of Tocopilla, Chile · 2187 days ago · 46 km deep · 5 km away · felt by 2
- 3.763 km S of Iquique, Chile · 2187 days ago · 45 km deep · 72 km away · felt by 3
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000cbqy. Read Fri, Oct 2, 2026, 3:24 PM UTC.