M4.1 earthquake 36 km E of Arica, Chile
A magnitude 4.1 earthquake struck 36 km E of Arica, Chile on Mon, Jul 31, 2017, 10:40 PM GMT-4 (02:40 UTC), 97 km (60 mi) below the surface.
A larger quake followed: M5.2 92 km SSE of Arica, Chile. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb), light
- Local time
- UTC
- 2017-08-01 02:40:20 UTC
- Depth
- 96.7 km (60.1 mi), intermediate-depth
- Epicenter
- 18.475° S, 69.949° 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 5.6 km horizontally, 2.2 km in depth
- Magnitude uncertainty
- ±0.16
- Depth from
- From location
- Station coverage gap
- 63°
- Stations used
- 38
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 5.292 km SSE of Arica, Chile · 3313 days ago · 61 km deep · 88 km away · felt by 13
- 4.363 km ESE of Palca, Peru · 3304 days ago · 143 km deep · 71 km away
- 4.723 km SE of Tacna, Peru · 3297 days ago · 98 km deep · 39 km away · felt by 1
- 3.977 km ESE of Palca, Peru · 3294 days ago · 147 km deep · 87 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000a32w. Read Wed, Sep 30, 2026, 10:18 PM UTC.