Chile earthquakes

M4.1 earthquake 41 km W of Coquimbo, Chile

A magnitude 4.1 earthquake struck 41 km W of Coquimbo, Chile on Fri, Sep 28, 2018, 7:02 PM GMT-3 (22:02 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M5.2 49 km W of Ovalle, Chile. This one was a foreshock.

Coquimbo 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
4.1 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-09-28 22:02:56 UTC
Depth
23.1 km (14.4 mi), shallow
Epicenter
29.997° S, 71.769° 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
4.1 Mwr
Nodal plane 1
Strike 0°, dip 22°, rake 119°
Nodal plane 2
Strike 149°, dip 71°, rake 79°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.4 km horizontally, 5.3 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
176°
Stations used
45

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. 4.653 km W of Ovalle, Chile · 2917 days ago · 31 km deep · 70 km away · felt by 1
  2. 4.337 km NW of Coquimbo, Chile · 2901 days ago · 35 km deep · 37 km away
  3. 4.749 km W of Ovalle, Chile · 2900 days ago · 35 km deep · 66 km away · felt by 7
  4. 4.166 km W of Ovalle, Chile · 2892 days ago · 16 km deep · 68 km away
  5. 4.445 km WNW of Coquimbo, Chile · 2887 days ago · 28 km deep · 23 km away
  6. 5.249 km W of Ovalle, Chile · 2884 days ago · 26 km deep · 70 km away · felt by 5
  7. 4.211 km NNW of Coquimbo, Chile · 2874 days ago · 38 km deep · 41 km away · felt by 3
  8. 4.354 km WSW of Ovalle, Chile · 2872 days ago · 24 km deep · 90 km away

Before

  1. 4.634 km SSW of Coquimbo, Chile · 2926 days ago · 42 km deep · 36 km away
  2. 4.660 km NNW of La Serena, Chile · 2953 days ago · 45 km deep · 79 km away · felt by 2
  3. 4.060 km SW of Coquimbo, Chile · 2953 days ago · 28 km deep · 35 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000h437. Read Fri, Oct 2, 2026, 11:45 PM UTC.