M3.8 earthquake 61 km WNW of La Ligua, Chile
A magnitude 3.8 earthquake struck 61 km WNW of La Ligua, Chile on Fri, Mar 9, 2018, 10:48 PM GMT-3 (01:48 UTC), 29 km (18 mi) below the surface.
A larger quake followed: M4.4 51 km W of Illapel, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.8 (mwr), minor
- Local time
- UTC
- 2018-03-10 01:48:17 UTC
- Depth
- 28.9 km (17.9 mi), shallow
- Epicenter
- 32.155° S, 71.783° W
- Region
- Chile
- Felt reports
- 3
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
3 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

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
- 3.8 Mwr
- Nodal plane 1
- Strike 194°, dip 63°, rake 110°
- Nodal plane 2
- Strike 336°, dip 33°, rake 56°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.8 km horizontally, 7.1 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 182°, 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: 5 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.246 km N of Valparaíso, Chile · 3117 days ago · 29 km deep · 53 km away · felt by 24
- 4.210 km WNW of Hacienda La Calera, Chile · 3115 days ago · 45 km deep · 79 km away · felt by 32
- 4.451 km W of Illapel, Chile · 3103 days ago · 30 km deep · 58 km away · felt by 7
- 4.450 km WSW of Illapel, Chile · 3092 days ago · 40 km deep · 46 km away · felt by 2
- 4.210 km ENE of Hacienda La Calera, Chile · 3086 days ago · 56 km deep · 90 km away · felt by 3
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000d36l. Read Wed, Sep 30, 2026, 4:34 PM UTC.