M4.2 earthquake 52 km SSE of Copiapó, Chile
A magnitude 4.2 earthquake struck 52 km SSE of Copiapó, Chile on Mon, Oct 9, 2017, 3:13 AM GMT-3 (06:13 UTC), 97 km (61 mi) below the surface.
A larger quake followed: M4.4 38 km S of Copiapó, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 2017-10-09 06:13:31 UTC
- Depth
- 97.5 km (60.6 mi), intermediate-depth
- Epicenter
- 27.825° S, 70.191° 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 II, weak shaking.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 7.9 km horizontally, 6.4 km in depth
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
- Station coverage gap
- 99°
- Stations used
- 50
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 2 in the 30 days before it.
After
- 4.438 km S of Copiapó, Chile · 3273 days ago · 77 km deep · 16 km away
- 4.1110 km ESE of Copiapó, Chile · 3245 days ago · 110 km deep · 82 km away
- 4.251 km ENE of Vallenar, Chile · 3220 days ago · 122 km deep · 65 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000b2yg. Read Sat, Sep 26, 2026, 9:58 AM UTC.