M4.1 earthquake 155 km N of Calama, Chile
A magnitude 4.1 earthquake struck 155 km N of Calama, Chile on Wed, Dec 23, 2015, 1:41 AM GMT-3 (04:41 UTC), 108 km (67 mi) below the surface.
A larger quake followed: M5.0 128 km N of Calama, 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 (mwr), light
- Local time
- UTC
- 2015-12-23 04:41:03 UTC
- Depth
- 107.7 km (66.9 mi), intermediate-depth
- Epicenter
- 21.056° S, 68.846° 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
- Reverse (thrust)
- Moment magnitude
- 4.1 Mwr
- Nodal plane 1
- Strike 144°, dip 86°, rake 79°
- Nodal plane 2
- Strike 32°, dip 12°, rake 158°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.2 km horizontally, 3.9 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 71°
- 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: 22 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.4126 km E of Iquique, Chile · 3934 days ago · 107 km deep · 80 km away
- 4.2108 km ESE of Iquique, Chile · 3934 days ago · 106 km deep · 65 km away
- 4.0123 km E of Iquique, Chile · 3933 days ago · 102 km deep · 82 km away
- 4.4154 km ESE of Iquique, Chile · 3930 days ago · 95 km deep · 52 km away
- 4.598 km NNE of Calama, Chile · 3930 days ago · 124 km deep · 80 km away
- 4.3105 km ESE of Iquique, Chile · 3930 days ago · 105 km deep · 60 km away
- 4.4119 km N of Calama, Chile · 3929 days ago · 117 km deep · 39 km away
- 4.3160 km E of Iquique, Chile · 3923 days ago · 111 km deep · 70 km away
- 5.0128 km N of Calama, Chile · 3909 days ago · 90 km deep · 29 km away
- 4.4127 km ESE of Iquique, Chile · 3909 days ago · 110 km deep · 48 km away
- 4.494 km NNE of Calama, Chile · 3902 days ago · 120 km deep · 83 km away
- 4.5119 km N of Calama, Chile · 3901 days ago · 111 km deep · 40 km away
- 4.0112 km NNE of Calama, Chile · 3900 days ago · 131 km deep · 60 km away
- 4.4Tarapaca, Chile · 3896 days ago · 100 km deep · 87 km away
- 4.1121 km NNE of Calama, Chile · 3893 days ago · 126 km deep · 48 km away
- 4.698 km NE of Calama, Chile · 3893 days ago · 117 km deep · 91 km away
- 4.1108 km NNE of Tocopilla, Chile · 3892 days ago · 45 km deep · 86 km away
- 3.9139 km ESE of Iquique, Chile · 3887 days ago · 99 km deep · 41 km away
- 4.189 km NE of Calama, Chile · 3881 days ago · 137 km deep · 94 km away
- 4.1110 km N of Calama, Chile · 3879 days ago · 98 km deep · 46 km away
- 4.5103 km E of Iquique, Chile · 3877 days ago · 101 km deep · 89 km away · felt by 1
- 4.4119 km NNE of Calama, Chile · 3875 days ago · 140 km deep · 71 km away
Before
- 4.1145 km E of Iquique, Chile · 3935 days ago · 116 km deep · 82 km away
- 4.172 km NNE of Calama, Chile · 3942 days ago · 106 km deep · 92 km away
- 4.8134 km NNE of Calama, Chile · 3943 days ago · 119 km deep · 38 km away
- 4.1108 km ESE of Iquique, Chile · 3947 days ago · 107 km deep · 59 km away
- 4.0109 km SE of Iquique, Chile · 3954 days ago · 110 km deep · 56 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us100048z6. Read Wed, Sep 30, 2026, 11:34 AM UTC.