M4.3 earthquake 90 km NW of Vallenar, Chile
A magnitude 4.3 earthquake struck 90 km NW of Vallenar, Chile on Wed, Jan 31, 2018, 8:34 PM GMT-3 (23:34 UTC), 20 km (12 mi) below the surface.
A larger quake followed: M4.6 124 km NW 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
- 4.3 (mb), light
- Local time
- UTC
- 2018-01-31 23:34:30 UTC
- Depth
- 19.9 km (12.3 mi), shallow
- Epicenter
- 27.957° S, 71.368° 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 5.7 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.22
- Depth from
- From location
- Station coverage gap
- 186°, poorly surrounded by stations
- 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: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6124 km NW of Vallenar, Chile · 3144 days ago · 8 km deep · 36 km away
- 4.281 km WSW of Vallenar, Chile · 3114 days ago · 24 km deep · 99 km away
- 3.960 km W of Vallenar, Chile · 3113 days ago · 24 km deep · 59 km away · felt by 1
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000d0x3. Read Sat, Sep 26, 2026, 1:29 AM UTC.