M4.0 earthquake 150 km N of Calama, Chile
A magnitude 4.0 earthquake struck 150 km N of Calama, Chile on Mon, Oct 29, 2018, 8:14 PM GMT-3 (23:14 UTC), 141 km (88 mi) below the surface.
A larger quake followed: M5.0 136 km NNE 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
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-10-29 23:14:02 UTC
- Depth
- 141.1 km (87.7 mi), intermediate-depth
- Epicenter
- 21.123° S, 68.645° 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 6.3 km horizontally, 5.5 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- From location
- Station coverage gap
- 67°
- Stations used
- 40
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.4122 km E of Iquique, Chile · 2893 days ago · 106 km deep · 89 km away · felt by 1
- 4.577 km NNE of Calama, Chile · 2887 days ago · 126 km deep · 78 km away
- 4.5132 km N of Calama, Chile · 2886 days ago · 115 km deep · 31 km away
- 4.5152 km N of Calama, Chile · 2881 days ago · 113 km deep · 32 km away
- 4.1141 km N of Calama, Chile · 2880 days ago · 113 km deep · 9 km away
- 4.1151 km N of Calama, Chile · 2873 days ago · 144 km deep · 5 km away
- 4.990 km NE of Calama, Chile · 2853 days ago · 133 km deep · 79 km away
- 4.2139 km N of Calama, Chile · 2850 days ago · 124 km deep · 11 km away
- 4.288 km NNW of Calama, Chile · 2846 days ago · 106 km deep · 79 km away
- 4.6154 km N of Calama, Chile · 2842 days ago · 93 km deep · 20 km away · felt by 1
- 4.692 km NNE of Calama, Chile · 2841 days ago · 143 km deep · 60 km away
- 5.0136 km NNE of Calama, Chile · 2839 days ago · 115 km deep · 53 km away · felt by 2
- 4.3105 km NNE of Calama, Chile · 2839 days ago · 140 km deep · 51 km away
Before
- 4.360 km NNE of Calama, Chile · 2896 days ago · 105 km deep · 93 km away · felt by 1
- 4.2121 km ESE of Iquique, Chile · 2902 days ago · 96 km deep · 74 km away
- 4.2139 km N of Calama, Chile · 2905 days ago · 122 km deep · 36 km away
- 4.3162 km N of Calama, Chile · 2908 days ago · 113 km deep · 24 km away
- 4.4153 km N of Calama, Chile · 2911 days ago · 133 km deep · 19 km away
- 4.2149 km N of Calama, Chile · 2920 days ago · 117 km deep · 28 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000i621. Read Fri, Oct 2, 2026, 10:15 AM UTC.