M4.0 earthquake 92 km SW of Vallenar, Chile
A magnitude 4.0 earthquake struck 92 km SW of Vallenar, Chile on Sat, Sep 1, 2018, 2:18 AM GMT-3 (05:18 UTC), 11 km (7 mi) below the surface.
A larger quake followed: M5.3 93 km W of Vallenar, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 2018-09-01 05:18:02 UTC
- Depth
- 11.2 km (7.0 mi), shallow
- Epicenter
- 29.098° S, 71.500° 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.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 7.0 km horizontally, 7.1 km in depth
- Magnitude uncertainty
- ±0.26
- Depth from
- From location
- Station coverage gap
- 145°
- Stations used
- 41
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.660 km NNW of La Serena, Chile · 2948 days ago · 45 km deep · 33 km away · felt by 2
- 5.393 km W of Vallenar, Chile · 2940 days ago · 35 km deep · 44 km away · felt by 3
- 4.060 km S of Vallenar, Chile · 2901 days ago · 73 km deep · 77 km away
- 4.337 km NW of Coquimbo, Chile · 2896 days ago · 35 km deep · 67 km away
Before
- 4.029 km NNW of La Serena, Chile · 2953 days ago · 34 km deep · 65 km away
- 5.226 km NNW of La Serena, Chile · 2953 days ago · 35 km deep · 66 km away · felt by 18
- 5.032 km NW of Coquimbo, Chile · 2954 days ago · 55 km deep · 69 km away · felt by 14
- 4.125 km NNW of La Serena, Chile · 2969 days ago · 45 km deep · 68 km away
- 4.2102 km W of Vallenar, Chile · 2970 days ago · 11 km deep · 48 km away
- 4.094 km NW of Coquimbo, Chile · 2971 days ago · 10 km deep · 56 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000h6d0. Read Mon, Sep 28, 2026, 8:40 AM UTC.