M4.1 earthquake 65 km W of Vallenar, Chile
A magnitude 4.1 earthquake struck 65 km W of Vallenar, Chile on Fri, Sep 20, 2019, 1:33 PM GMT-3 (16:33 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M4.7 85 km NNW of La Serena, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-09-20 16:33:53 UTC
- Depth
- 41.8 km (25.9 mi), shallow
- Epicenter
- 28.529° S, 71.422° 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.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Oblique reverse
- Moment magnitude
- 4.1 Mwr
- Nodal plane 1
- Strike 143°, dip 44°, rake 53°
- Nodal plane 2
- Strike 9°, dip 56°, rake 121°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 6.9 km horizontally, 8.7 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 181°, poorly surrounded by stations
- Stations used
- 38
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 0 in the 30 days before it.
After
- 4.785 km NNW of La Serena, Chile · 2547 days ago · 36 km deep · 85 km away · felt by 2
- 4.692 km NNW of La Serena, Chile · 2531 days ago · 12 km deep · 81 km away
- 4.1100 km NNW of Coquimbo, Chile · 2526 days ago · 37 km deep · 85 km away
- 4.737 km NE of Vallenar, Chile · 2517 days ago · 86 km deep · 90 km away
- 4.1103 km WSW of Copiapó, Chile · 2516 days ago · 22 km deep · 90 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us60005lg4. Read Thu, Oct 1, 2026, 1:48 PM UTC.