M4.4 earthquake 117 km WNW of Copiapó, Chile
A magnitude 4.4 earthquake struck 117 km WNW of Copiapó, Chile on Sun, Feb 4, 2018, 8:18 AM GMT-3 (11:18 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.6 124 km NW 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
- 2018-02-04 11:18:48 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 26.987° S, 71.438° 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 I, not felt shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.9 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.22
- Depth from
- Operator assigned
- Station coverage gap
- 187°, poorly surrounded by stations
- Stations used
- 27
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 us1000cfm4. Read Sat, Sep 26, 2026, 6:25 AM UTC.