M4.3 earthquake 92 km WSW of Vallenar, Chile
A magnitude 4.3 earthquake struck 92 km WSW of Vallenar, Chile on Mon, Mar 5, 2018, 11:59 PM GMT-3 (02:59 UTC), 23 km (15 mi) below the surface.
A larger quake followed: M4.8 40 km WNW of Coquimbo, 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 (mwr), light
- Local time
- UTC
- 2018-03-06 02:59:09 UTC
- Depth
- 23.3 km (14.5 mi), shallow
- Epicenter
- 29.006° S, 71.567° W
- Region
- Chile
- Felt reports
- 1
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
1 person reported to the USGS what they felt; the strongest reported shaking was II, weak 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
- 4.3 Mwr
- Nodal plane 1
- Strike 15°, dip 41°, rake 86°
- Nodal plane 2
- Strike 200°, dip 49°, rake 94°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.0 km horizontally, 4.7 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 98°
- Stations used
- 83
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.281 km WSW of Vallenar, Chile · 3114 days ago · 24 km deep · 20 km away
- 3.960 km W of Vallenar, Chile · 3113 days ago · 24 km deep · 61 km away · felt by 1
- 4.840 km WNW of Coquimbo, Chile · 3085 days ago · 36 km deep · 92 km away · felt by 3
- 3.430 km WNW of Coquimbo, Chile · 3085 days ago · 32 km deep · 96 km away · felt by 4
- 4.479 km NW of Vallenar, Chile · 3074 days ago · 22 km deep · 93 km away
- 4.817 km NNW of Coquimbo, Chile · 3066 days ago · 38 km deep · 91 km away · felt by 13
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000dcpz. Read Sat, Sep 26, 2026, 5:32 AM UTC.