M4.3 earthquake 76 km ENE of Antofagasta, Chile
A magnitude 4.3 earthquake struck 76 km ENE of Antofagasta, Chile on Fri, Dec 21, 2018, 7:31 PM GMT-3 (22:31 UTC), 76 km (47 mi) below the surface.
A larger quake followed: M4.4 79 km SSW of Calama, 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 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-12-21 22:31:34 UTC
- Depth
- 76.0 km (47.2 mi), intermediate-depth
- Epicenter
- 23.482° S, 69.667° 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 4.9 km horizontally, 9.7 km in depth
- Magnitude uncertainty
- ±0.27
- Depth from
- From location
- Station coverage gap
- 124°
- Stations used
- 45
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.479 km SSW of Calama, Chile · 2832 days ago · 94 km deep · 65 km away
- 4.172 km SW of Calama, Chile · 2796 days ago · 114 km deep · 65 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000iw4b. Read Fri, Oct 2, 2026, 10:04 AM UTC.