M4.2 earthquake 88 km WNW of Iquique, Chile
A magnitude 4.2 earthquake struck 88 km WNW of Iquique, Chile on Mon, Aug 21, 2017, 7:06 AM GMT-3 (10:06 UTC), 37 km (23 mi) below the surface.
A larger quake followed: M4.4 90 km WNW of Iquique, 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
- 2017-08-21 10:06:52 UTC
- Depth
- 37.1 km (23.1 mi), shallow
- Epicenter
- 20.042° S, 70.980° 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 7.5 km horizontally, 23.1 km in depth
- Magnitude uncertainty
- ±0.53
- Depth from
- From location
- Station coverage gap
- 203°, poorly surrounded by stations
- Stations used
- 22
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
- 4.322 km N of Iquique, Chile · 3326 days ago · 47 km deep · 88 km away
- 4.076 km W of Iquique, Chile · 3305 days ago · 15 km deep · 25 km away · felt by 1
- 4.284 km W of Iquique, Chile · 3305 days ago · 12 km deep · 24 km away
- 4.490 km WNW of Iquique, Chile · 3297 days ago · 13 km deep · 6 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000aa4k. Read Wed, Sep 30, 2026, 10:18 PM UTC.