M4.4 earthquake 89 km W of Copiapó, Chile
A magnitude 4.4 earthquake struck 89 km W of Copiapó, Chile on Sun, Oct 28, 2018, 1:22 PM GMT-3 (16:22 UTC), 40 km (25 mi) below the surface.
A larger quake followed: M4.6 92 km NNW of Vallenar, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 2018-10-28 16:22:35 UTC
- Depth
- 39.6 km (24.6 mi), shallow
- Epicenter
- 27.373° S, 71.240° 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 5.7 km horizontally, 10.2 km in depth
- Magnitude uncertainty
- ±0.19
- Depth from
- From location
- Station coverage gap
- 199°, poorly surrounded by stations
- Stations used
- 26
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 2 in the 30 days before it.
After
- 4.589 km WNW of Copiapó, Chile · 2889 days ago · 21 km deep · 20 km away · felt by 1
- 4.692 km NNW of Vallenar, Chile · 2883 days ago · 22 km deep · 52 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000hi8w. Read Tue, Sep 29, 2026, 10:36 PM UTC.