M4.2 earthquake 115 km ESE of Iquique, Chile
A magnitude 4.2 earthquake struck 115 km ESE of Iquique, Chile on Fri, Aug 21, 2015, 3:04 AM GMT-3 (06:04 UTC), 109 km (67 mi) below the surface.
A larger quake followed: M5.4 105 km ENE 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 (mwr), light
- Local time
- UTC
- 2015-08-21 06:04:30 UTC
- Depth
- 108.6 km (67.5 mi), intermediate-depth
- Epicenter
- 20.619° S, 69.129° 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.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Normal
- Moment magnitude
- 4.2 Mwr
- Nodal plane 1
- Strike 350°, dip 84°, rake -88°
- Nodal plane 2
- Strike 156°, dip 6°, rake -104°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.7 km horizontally, 4.9 km in depth
- Magnitude uncertainty
- ±0.06
- 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: 10 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.5111 km E of Iquique, Chile · 4056 days ago · 108 km deep · 24 km away
- 3.9114 km E of Iquique, Chile · 4054 days ago · 105 km deep · 29 km away
- 5.4105 km ENE of Iquique, Chile · 4047 days ago · 97 km deep · 94 km away · felt by 6
- 4.1108 km E of Iquique, Chile · 4030 days ago · 96 km deep · 61 km away
- 4.1138 km N of Calama, Chile · 4024 days ago · 114 km deep · 79 km away
- 4.6101 km E of Iquique, Chile · 4024 days ago · 99 km deep · 44 km away
- 4.8133 km ESE of Iquique, Chile · 4024 days ago · 80 km deep · 30 km away · felt by 2
- 4.6155 km ESE of Iquique, Chile · 4022 days ago · 100 km deep · 40 km away
- 4.7151 km E of Iquique, Chile · 4003 days ago · 108 km deep · 83 km away
- 4.3Chile-Bolivia border region · 3999 days ago · 125 km deep · 79 km away
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us100033vn. Read Wed, Sep 30, 2026, 4:15 PM UTC.