Chile earthquakes

M4.1 earthquake 64 km NW of La Ligua, Chile

A magnitude 4.1 earthquake struck 64 km NW of La Ligua, Chile on Wed, Dec 9, 2020, 1:15 AM GMT-3 (04:15 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.6 38 km WSW of Illapel, Chile. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
4.1 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-12-09 04:15:41 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
32.036° S, 71.710° W
Region
Chile
Felt reports
3
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

3 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
Reverse (thrust)
Moment magnitude
4.1 Mwr
Nodal plane 1
Strike 15°, dip 13°, rake 107°
Nodal plane 2
Strike 178°, dip 77°, rake 86°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.1 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.04
Depth from
Operator assigned
Station coverage gap
77°
Stations used
64

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.555 km WNW of La Ligua, Chile · 2120 days ago · 21 km deep · 28 km away · felt by 3
  2. 4.050 km NNW of Valparaíso, Chile · 2117 days ago · 35 km deep · 67 km away
  3. 4.341 km WNW of Valparaíso, Chile · 2116 days ago · 10 km deep · 96 km away
  4. 4.540 km WNW of Valparaíso, Chile · 2116 days ago · 14 km deep · 94 km away · felt by 1
  5. 4.146 km WNW of La Ligua, Chile · 2110 days ago · 35 km deep · 29 km away
  6. 4.5102 km WNW of Illapel, Chile · 2108 days ago · 21 km deep · 88 km away · felt by 1
  7. 4.442 km NW of La Ligua, Chile · 2107 days ago · 47 km deep · 23 km away · felt by 1
  8. 4.490 km WNW of La Ligua, Chile · 2102 days ago · 10 km deep · 31 km away
  9. 4.443 km WSW of Illapel, Chile · 2094 days ago · 29 km deep · 26 km away
  10. 4.638 km WSW of Illapel, Chile · 2084 days ago · 49 km deep · 31 km away · felt by 2
  11. 4.250 km WNW of La Ligua, Chile · 2072 days ago · 57 km deep · 25 km away · felt by 1

Before

  1. 5.050 km NNW of La Ligua, Chile · 2124 days ago · 44 km deep · 19 km away · felt by 33
  2. 4.122 km SW of Illapel, Chile · 2136 days ago · 44 km deep · 45 km away · felt by 1
  3. 4.356 km W of La Ligua, Chile · 2140 days ago · 22 km deep · 51 km away · felt by 2
  4. 4.223 km W of La Ligua, Chile · 2146 days ago · 68 km deep · 50 km away · felt by 4
  5. 4.736 km WSW of Illapel, Chile · 2149 days ago · 47 km deep · 35 km away · felt by 5

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000cpcg. Read Fri, Oct 2, 2026, 1:32 PM UTC.