M4.5 earthquake 105 km E of Iquique, Chile
A magnitude 4.5 earthquake struck 105 km E of Iquique, Chile on Wed, Oct 21, 2015, 11:39 AM GMT-3 (14:39 UTC), 87 km (54 mi) below the surface.
A larger quake followed: M4.6 131 km E 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
- 4.5 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2015-10-21 14:39:17 UTC
- Depth
- 87.2 km (54.2 mi), intermediate-depth
- Epicenter
- 20.320° S, 69.142° W
- Region
- Chile
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt (IV) at Pozo Almonte and (III) at Alto Hospicio, Iquique, La Tirana, Pica and Quillagua.
From the USGS event page for us10003q8j. U.S. Geological Survey text and figures are in the public domain.
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
- 4.5 Mwr
- Nodal plane 1
- Strike 333°, dip 62°, rake -105°
- Nodal plane 2
- Strike 183°, dip 32°, rake -64°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 6.5 km horizontally, 5.3 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 44°
- Stations used
- 53
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.6131 km E of Iquique, Chile · 3998 days ago · 107 km deep · 27 km away · felt by 2
- 4.6126 km ENE of Iquique, Chile · 3986 days ago · 113 km deep · 41 km away
- 4.1162 km NNE of Calama, Chile · 3974 days ago · 129 km deep · 97 km away
- 4.3110 km ENE of Iquique, Chile · 3967 days ago · 100 km deep · 41 km away
- 4.3113 km NE of Iquique, Chile · 3961 days ago · 100 km deep · 86 km away
- 4.3109 km ENE of Iquique, Chile · 3960 days ago · 100 km deep · 73 km away · felt by 1
- 4.0109 km SE of Iquique, Chile · 3958 days ago · 110 km deep · 53 km away
- 4.1108 km ESE of Iquique, Chile · 3952 days ago · 107 km deep · 39 km away
- 4.3100 km ENE of Iquique, Chile · 3950 days ago · 107 km deep · 60 km away
Before
- 4.7151 km E of Iquique, Chile · 4007 days ago · 108 km deep · 58 km away
- 4.6155 km ESE of Iquique, Chile · 4026 days ago · 100 km deep · 66 km away
- 4.1163 km ENE of Iquique, Chile · 4026 days ago · 126 km deep · 81 km away
- 4.8133 km ESE of Iquique, Chile · 4028 days ago · 80 km deep · 63 km away · felt by 2
- 4.6101 km E of Iquique, Chile · 4029 days ago · 99 km deep · 11 km away
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10003q8j. Read Mon, Oct 5, 2026, 4:28 AM UTC.