M4.2 earthquake 102 km W of Vallenar, Chile
A magnitude 4.2 earthquake struck 102 km W of Vallenar, Chile on Fri, Aug 10, 2018, 10:17 PM GMT-4 (02:17 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
- 4.2 (mb), light
- Local time
- UTC
- 2018-08-11 02:17:27 UTC
- Depth
- 11.1 km (6.9 mi), shallow
- Epicenter
- 28.743° S, 71.787° 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 4.7 km horizontally, 6.5 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- From location
- Station coverage gap
- 190°, poorly surrounded by stations
- Stations used
- 47
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 2 in the 30 days before it.
After
- 4.092 km SW of Vallenar, Chile · 2952 days ago · 11 km deep · 48 km away
- 4.660 km NNW of La Serena, Chile · 2951 days ago · 45 km deep · 80 km away · felt by 2
- 5.393 km W of Vallenar, Chile · 2943 days ago · 35 km deep · 9 km away · felt by 3
- 4.293 km NW of Vallenar, Chile · 2923 days ago · 28 km deep · 92 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g6qx. Read Thu, Oct 1, 2026, 12:20 AM UTC.