Chile earthquakes

M4.3 earthquake 70 km W of Illapel, Chile

A magnitude 4.3 earthquake struck 70 km W of Illapel, Chile on Sun, Feb 18, 2018, 9:21 PM GMT-3 (00:21 UTC), 31 km (19 mi) below the surface.

A larger quake followed: M6.2 56 km SW of Ovalle, 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
4.3 (mwr), light
Local time
UTC
2018-02-19 00:21:10 UTC
Depth
31.3 km (19.5 mi), shallow
Epicenter
31.551° S, 71.904° W
Region
Chile
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

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
4.3 Mwr
Nodal plane 1
Strike 4°, dip 32°, rake 112°
Nodal plane 2
Strike 159°, dip 61°, rake 77°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.5 km horizontally, 5.4 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
162°
Stations used
66

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.275 km W of Illapel, Chile · 3139 days ago · 19 km deep · 6 km away
  2. 3.932 km WNW of Illapel, Chile · 3134 days ago · 52 km deep · 38 km away
  3. 4.357 km SSW of Ovalle, Chile · 3126 days ago · 60 km deep · 68 km away
  4. 4.732 km S of Ovalle, Chile · 3126 days ago · 60 km deep · 95 km away
  5. 4.493 km WSW of Illapel, Chile · 3121 days ago · 40 km deep · 39 km away · felt by 21
  6. 3.861 km WNW of La Ligua, Chile · 3121 days ago · 29 km deep · 68 km away · felt by 3
  7. 4.451 km W of Illapel, Chile · 3097 days ago · 30 km deep · 20 km away · felt by 7
  8. 4.083 km WSW of Ovalle, Chile · 3094 days ago · 10 km deep · 80 km away
  9. 6.256 km SW of Ovalle, Chile · 3089 days ago · 66 km deep · 68 km away · felt by 389
  10. 4.450 km WSW of Illapel, Chile · 3086 days ago · 40 km deep · 31 km away · felt by 2

Before

  1. 4.474 km WNW of La Ligua, Chile · 3162 days ago · 11 km deep · 84 km away
  2. 4.549 km SSW of Ovalle, Chile · 3163 days ago · 51 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000d4g3. Read Thu, Sep 24, 2026, 3:38 PM UTC.