Chile earthquakes

M4.0 earthquake 115 km ESE of Iquique, Chile

A magnitude 4.0 earthquake struck 115 km ESE of Iquique, Chile on Sun, Oct 31, 2021, 10:22 PM GMT-3 (01:22 UTC), 115 km (71 mi) below the surface.

A larger quake followed: M4.6 163 km ESE of Iquique, Chile. This one was a foreshock.

Pozo Almonte 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
2021-11-01 01:22:18 UTC
Depth
114.8 km (71.3 mi), intermediate-depth
Epicenter
20.792° S, 69.224° 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 II, weak 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 5.5 km horizontally, 3.8 km in depth
Magnitude uncertainty
±0.30
Depth from
From location
Station coverage gap
90°
Stations used
21

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.720 km SE of Iquique, Chile · 1791 days ago · 54 km deep · 97 km away · felt by 1
  2. 4.6163 km ESE of Iquique, Chile · 1780 days ago · 115 km deep · 49 km away · felt by 7
  3. 4.0138 km N of Calama, Chile · 1777 days ago · 117 km deep · 57 km away
  4. 4.2157 km NNE of Calama, Chile · 1776 days ago · 132 km deep · 77 km away
  5. 4.2117 km N of Calama, Chile · 1775 days ago · 119 km deep · 78 km away
  6. 4.6119 km ESE of Iquique, Chile · 1773 days ago · 95 km deep · 29 km away · felt by 18
  7. 4.3147 km E of Iquique, Chile · 1762 days ago · 122 km deep · 71 km away
  8. 4.1135 km SE of Iquique, Chile · 1756 days ago · 116 km deep · 20 km away · felt by 1
  9. 4.2152 km N of Calama, Chile · 1754 days ago · 106 km deep · 52 km away
  10. 4.1152 km N of Calama, Chile · 1753 days ago · 136 km deep · 62 km away
  11. 4.5119 km ESE of Iquique, Chile · 1752 days ago · 112 km deep · 6 km away · felt by 1
  12. 2.844 km SE of Iquique, Chile · 1751 days ago · 44 km deep · 71 km away · felt by 3
  13. 4.2143 km N of Calama, Chile · 1741 days ago · 114 km deep · 70 km away

Before

  1. 4.2142 km E of Iquique, Chile · 1798 days ago · 114 km deep · 58 km away
  2. 4.2146 km NNE of Calama, Chile · 1799 days ago · 138 km deep · 75 km away
  3. 4.2140 km NNE of Calama, Chile · 1812 days ago · 125 km deep · 94 km away
  4. 4.8148 km N of Calama, Chile · 1819 days ago · 114 km deep · 52 km away · felt by 3
  5. 4.2102 km N of Calama, Chile · 1823 days ago · 103 km deep · 85 km away
  6. 4.229 km SE of Iquique, Chile · 1824 days ago · 88 km deep · 89 km away · felt by 8

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000fqea. Read Sat, Oct 3, 2026, 7:53 AM UTC.