M4.1 earthquake 72 km SW of San Antonio, Chile
A magnitude 4.1 earthquake struck 72 km SW of San Antonio, Chile on Tue, Oct 13, 2020, 4:07 PM GMT-3 (19:07 UTC), 20 km (12 mi) below the surface.
A larger quake followed: M4.3 112 km N of Constitución, 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
- 2020-10-13 19:07:23 UTC
- Depth
- 19.8 km (12.3 mi), shallow
- Epicenter
- 34.004° S, 72.224° 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
- 4.1 Mwr
- Nodal plane 1
- Strike 13°, dip 34°, rake 95°
- Nodal plane 2
- Strike 187°, dip 56°, rake 86°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.3 km horizontally, 3.8 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 81°
- Stations used
- 53
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000c831. Read Sat, Oct 3, 2026, 6:20 PM UTC.