Chile earthquakes

M4.3 earthquake 107 km SE of Arica, Chile

A magnitude 4.3 earthquake struck 107 km SE of Arica, Chile on Tue, Jul 21, 2020, 2:49 AM GMT-4 (06:49 UTC), 103 km (64 mi) below the surface.

A larger quake followed: M5.5 122 km NE of Iquique, Chile. This one was a foreshock.

Arica 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
4.3 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-07-21 06:49:45 UTC
Depth
102.7 km (63.8 mi), intermediate-depth
Epicenter
19.111° S, 69.529° 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 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?

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Normal
Moment magnitude
4.3 Mwr
Nodal plane 1
Strike 332°, dip 64°, rake -75°
Nodal plane 2
Strike 122°, dip 29°, rake -117°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.8 km horizontally, 3.9 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
74°
Stations used
167

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 3.954 km NNE of Iquique, Chile · 2252 days ago · 31 km deep · 84 km away · felt by 12
  2. 5.5122 km NE of Iquique, Chile · 2251 days ago · 102 km deep · 64 km away · felt by 42
  3. 4.5103 km ENE of Iquique, Chile · 2239 days ago · 99 km deep · 98 km away · felt by 1
  4. 5.184 km S of Arica, Chile · 2239 days ago · 60 km deep · 82 km away · felt by 16
  5. 4.085 km NE of Iquique, Chile · 2234 days ago · 100 km deep · 58 km away · felt by 7

Before

  1. 4.3105 km SE of Arica, Chile · 2278 days ago · 125 km deep · 5 km away
  2. 4.286 km ESE of Arica, Chile · 2282 days ago · 116 km deep · 33 km away
  3. 4.286 km SE of Arica, Chile · 2287 days ago · 116 km deep · 23 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000as66. Read Fri, Oct 2, 2026, 7:12 PM UTC.