M4.1 earthquake 85 km WSW of San Antonio, Chile
A magnitude 4.1 earthquake struck 85 km WSW of San Antonio, Chile on Mon, Dec 3, 2018, 12:23 AM GMT-3 (03:23 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 7 km SSW 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
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-12-03 03:23:25 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 33.968° S, 72.411° 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.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 1.9 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.20
- Depth from
- Operator assigned
- Station coverage gap
- 79°
- Stations used
- 54
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 4 in the 30 days before it.
After
Before
- 4.488 km WSW of San Antonio, Chile · 2859 days ago · 14 km deep · 7 km away
- 4.781 km WSW of San Antonio, Chile · 2860 days ago · 19 km deep · 4 km away · felt by 1
- 5.581 km WSW of San Antonio, Chile · 2860 days ago · 10 km deep · 5 km away · felt by 17
- 4.560 km W of San Antonio, Chile · 2864 days ago · 10 km deep · 35 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000i48a. Read Thu, Oct 1, 2026, 8:59 AM UTC.