M4.3 earthquake 96 km W of San Antonio, Chile
A magnitude 4.3 earthquake struck 96 km W of San Antonio, Chile on Thu, Oct 27, 2016, 7:09 PM GMT-3 (22:09 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M5.2 94 km WSW 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
- 4.3 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2016-10-27 22:09:29 UTC
- Depth
- 14.6 km (9.1 mi), shallow
- Epicenter
- 33.766° S, 72.621° 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
- Reverse (thrust)
- Moment magnitude
- 4.3 Mwr
- Nodal plane 1
- Strike 24°, dip 36°, rake 114°
- Nodal plane 2
- Strike 175°, dip 58°, rake 74°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.5 km horizontally, 5.3 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 101°
- Stations used
- 50
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
- 5.294 km WSW of San Antonio, Chile · 3626 days ago · 10 km deep · 9 km away · felt by 1
- 4.985 km WSW of San Antonio, Chile · 3625 days ago · 9 km deep · 10 km away · felt by 5
- 3.943 km S of San Antonio, Chile · 3602 days ago · 41 km deep · 90 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us100072he. Read Sun, Oct 4, 2026, 12:19 AM UTC.