Chile earthquakes

M4.2 earthquake 75 km W of Illapel, Chile

A magnitude 4.2 earthquake struck 75 km W of Illapel, Chile on Mon, Feb 19, 2018, 11:49 PM GMT-3 (02:49 UTC), 19 km (12 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
4.2 (mwr), light
Local time
UTC
2018-02-20 02:49:09 UTC
Depth
18.9 km (11.7 mi), shallow
Epicenter
31.577° S, 71.964° 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
4.2 Mwr
Nodal plane 1
Strike 171°, dip 81°, rake 74°
Nodal plane 2
Strike 52°, dip 18°, rake 150°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 2.3 km horizontally, 4.2 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
139°
Stations used
53

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 3.932 km WNW of Illapel, Chile · 3135 days ago · 52 km deep · 44 km away
  2. 4.357 km SSW of Ovalle, Chile · 3127 days ago · 60 km deep · 74 km away
  3. 4.493 km WSW of Illapel, Chile · 3122 days ago · 40 km deep · 33 km away · felt by 21
  4. 3.861 km WNW of La Ligua, Chile · 3122 days ago · 29 km deep · 66 km away · felt by 3
  5. 4.451 km W of Illapel, Chile · 3098 days ago · 30 km deep · 25 km away · felt by 7
  6. 4.083 km WSW of Ovalle, Chile · 3095 days ago · 10 km deep · 83 km away
  7. 6.256 km SW of Ovalle, Chile · 3090 days ago · 66 km deep · 74 km away · felt by 389
  8. 4.450 km WSW of Illapel, Chile · 3087 days ago · 40 km deep · 33 km away · felt by 2

Before

  1. 4.370 km W of Illapel, Chile · 3141 days ago · 31 km deep · 6 km away
  2. 4.474 km WNW of La Ligua, Chile · 3164 days ago · 11 km deep · 80 km away
  3. 4.549 km SSW of Ovalle, Chile · 3164 days ago · 51 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000d53p. Read Fri, Sep 25, 2026, 5:51 PM UTC.