M4.0 earthquake 34 km S of Copiapó, Chile
A magnitude 4.0 earthquake struck 34 km S of Copiapó, Chile on Mon, Apr 20, 2015, 1:18 PM GMT-3 (16:18 UTC), 93 km (58 mi) below the surface.
A larger quake followed: M5.2 41 km NNE 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
- 4.0 (ml), light
- Local time
- UTC
- 2015-04-20 16:18:31 UTC
- Depth
- 92.6 km (57.5 mi), intermediate-depth
- Epicenter
- 27.673° S, 70.287° 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 III, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 8.8 km horizontally, 8.4 km in depth
- Stations used
- 0
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us200027t6. Read Wed, Sep 30, 2026, 8:34 PM UTC.