Chile earthquakes

M4.0 earthquake 86 km NNE of Tocopilla, Chile

A magnitude 4.0 earthquake struck 86 km NNE of Tocopilla, Chile on Wed, Oct 28, 2020, 1:13 PM GMT-3 (16:13 UTC), 54 km (34 mi) below the surface.

A larger quake followed: M4.3 134 km N of Calama, Chile. This one was a foreshock.

Tocopilla forecastMore in Chile

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-10-28 16:13:55 UTC
Depth
54.0 km (33.5 mi), shallow
Epicenter
21.358° S, 69.918° W
Region
Chile
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.7 km horizontally, 7.2 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 5 in the 30 days before it.

After

  1. 4.3134 km N of Calama, Chile · 2147 days ago · 128 km deep · 96 km away
  2. 3.967 km SSW of Iquique, Chile · 2119 days ago · 70 km deep · 76 km away · felt by 11
  3. 4.388 km SSW of Iquique, Chile · 2107 days ago · 25 km deep · 80 km away · felt by 3

Before

  1. 3.983 km NNE of Tocopilla, Chile · 2171 days ago · 53 km deep · 3 km away · felt by 2
  2. 4.239 km NW of Tocopilla, Chile · 2179 days ago · 24 km deep · 79 km away
  3. 4.220 km NE of Tocopilla, Chile · 2181 days ago · 72 km deep · 67 km away
  4. 4.082 km NNE of Tocopilla, Chile · 2187 days ago · 46 km deep · 7 km away · felt by 2
  5. 3.763 km S of Iquique, Chile · 2187 days ago · 45 km deep · 69 km away · felt by 3

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000c6we. Read Fri, Oct 2, 2026, 3:24 PM UTC.