M4.1 earthquake 82 km NNE of Iquique, Chile
A magnitude 4.1 earthquake struck 82 km NNE of Iquique, Chile on Wed, Aug 18, 2021, 11:44 AM GMT-4 (15:44 UTC), 63 km (39 mi) below the surface.
A larger quake followed: M4.3 92 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
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-08-18 15:44:25 UTC
- Depth
- 63.3 km (39.4 mi), shallow
- Epicenter
- 19.529° S, 69.845° W
- Region
- Chile
- Felt reports
- 3
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
3 people 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 3.2 km horizontally, 8.1 km in depth
- Magnitude uncertainty
- ±0.26
- Depth from
- From location
- Station coverage gap
- 136°
- Stations used
- 29
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.133 km W of Iquique, Chile · 1853 days ago · 24 km deep · 97 km away · felt by 9
- 4.2126 km SE of Arica, Chile · 1843 days ago · 119 km deep · 62 km away
- 4.392 km ENE of Iquique, Chile · 1842 days ago · 103 km deep · 82 km away · felt by 9
- 2.723 km SE of Iquique, Chile · 1840 days ago · 76 km deep · 96 km away · felt by 2
- 4.394 km S of Arica, Chile · 1828 days ago · 34 km deep · 51 km away · felt by 2
- 4.0Tarapaca, Chile · 1815 days ago · 113 km deep · 80 km away
- 3.911 km NNE of Iquique, Chile · 1815 days ago · 47 km deep · 71 km away · felt by 9
Before
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000f7zs. Read Fri, Oct 2, 2026, 10:28 PM UTC.