M3.9 earthquake 43 km S of San Antonio, Chile
A magnitude 3.9 earthquake struck 43 km S of San Antonio, Chile on Tue, Nov 22, 2016, 8:23 PM GMT-3 (23:23 UTC), 41 km (26 mi) below the surface.
A larger quake followed: M4.4 10 km SSE of San Antonio, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (Mwr, regional moment), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2016-11-22 23:23:46 UTC
- Depth
- 41.1 km (25.5 mi), shallow
- Epicenter
- 33.980° S, 71.682° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt (III) at Navidad and Pichilemu; (II) at Rancagua.
From the USGS event page for us10007bm4. U.S. Geological Survey text and figures are in the public domain.
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
- 3.9 Mwr
- Nodal plane 1
- Strike 21°, dip 46°, rake 125°
- Nodal plane 2
- Strike 156°, dip 54°, rake 60°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.7 km horizontally, 6.4 km in depth
- Magnitude uncertainty
- ±0.06
- Stations used
- 0
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 5 in the 30 days before it.
After
- 3.939 km NNW of San Vicente, Chile · 3592 days ago · 56 km deep · 39 km away
- 4.216 km NE of Graneros, Chile · 3569 days ago · 96 km deep · 100 km away · felt by 4
- 4.410 km SSE of San Antonio, Chile · 3564 days ago · 43 km deep · 34 km away · felt by 7
- 4.217 km SE of Paine, Chile · 3560 days ago · 95 km deep · 99 km away
- 4.398 km SW of San Antonio, Chile · 3559 days ago · 19 km deep · 72 km away · felt by 1
Before
- 4.331 km SW of Santa Cruz, Chile · 3604 days ago · 49 km deep · 92 km away
- 4.985 km WSW of San Antonio, Chile · 3623 days ago · 9 km deep · 80 km away · felt by 5
- 5.294 km WSW of San Antonio, Chile · 3624 days ago · 10 km deep · 85 km away · felt by 1
- 4.396 km W of San Antonio, Chile · 3626 days ago · 15 km deep · 90 km away
- 6.088 km WSW of San Antonio, Chile · 3627 days ago · 13 km deep · 82 km away · felt by 14
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10007bm4. Read Fri, Oct 2, 2026, 8:06 AM UTC.