Chile earthquakes

M3.8 earthquake 9 km SSW of Iquique, Chile

A magnitude 3.8 earthquake struck 9 km SSW of Iquique, Chile on Fri, Oct 22, 2021, 6:30 AM GMT-3 (09:30 UTC), 41 km (26 mi) below the surface.

A larger quake followed: M4.0 90 km NE of Iquique, Chile. This one was a foreshock.

Iquique 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
3.8 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2021-10-22 09:30:41 UTC
Depth
41.3 km (25.7 mi), shallow
Epicenter
20.285° S, 70.200° W
Region
Chile
Felt reports
6
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

6 people reported to the USGS what they felt; the strongest reported shaking was III, 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 2.8 km horizontally, 10.8 km in depth
Magnitude uncertainty
±0.29
Depth from
From location
Station coverage gap
152°
Stations used
33

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 4 in the 30 days before it.

After

  1. 2.720 km SE of Iquique, Chile · 1791 days ago · 54 km deep · 20 km away · felt by 1
  2. 4.090 km NE of Iquique, Chile · 1788 days ago · 102 km deep · 100 km away · felt by 1
  3. 3.984 km S of Iquique, Chile · 1785 days ago · 42 km deep · 77 km away · felt by 1
  4. 3.125 km WSW of Iquique, Chile · 1779 days ago · 39 km deep · 19 km away · felt by 2
  5. 2.621 km SW of Iquique, Chile · 1769 days ago · 46 km deep · 13 km away · felt by 2
  6. 2.844 km SE of Iquique, Chile · 1751 days ago · 44 km deep · 45 km away · felt by 3

Before

  1. 4.044 km W of Iquique, Chile · 1811 days ago · 25 km deep · 40 km away · felt by 4
  2. 3.911 km NNE of Iquique, Chile · 1815 days ago · 47 km deep · 21 km away · felt by 9
  3. 4.229 km SE of Iquique, Chile · 1824 days ago · 88 km deep · 27 km away · felt by 8
  4. 3.773 km WSW of Iquique, Chile · 1826 days ago · 17 km deep · 65 km away · felt by 1

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000fwps. Read Sat, Oct 3, 2026, 12:00 AM UTC.