Chile earthquakes

M4.2 earthquake 88 km NNE of Calama, Chile

A magnitude 4.2 earthquake struck 88 km NNE of Calama, Chile on Thu, Apr 26, 2018, 8:57 PM GMT-3 (23:57 UTC), 120 km (74 mi) below the surface.

A larger quake followed: M4.7 135 km NNE of Calama, Chile. This one was a foreshock.

Calama forecastMore in Chile

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.2 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-04-26 23:57:15 UTC
Depth
119.8 km (74.4 mi), intermediate-depth
Epicenter
21.762° S, 68.490° 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 22°, dip 72°, rake -74°
Nodal plane 2
Strike 159°, dip 24°, rake -130°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 5.8 km horizontally, 5.4 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
32°
Stations used
74

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 4.059 km NNE of Calama, Chile · 3071 days ago · 102 km deep · 33 km away
  2. 4.3100 km NNE of Calama, Chile · 3067 days ago · 119 km deep · 12 km away
  3. 4.5100 km NE of Calama, Chile · 3065 days ago · 147 km deep · 14 km away
  4. 4.054 km NE of Calama, Chile · 3064 days ago · 120 km deep · 35 km away
  5. 4.7135 km NNE of Calama, Chile · 3054 days ago · 114 km deep · 58 km away
  6. 4.6111 km NNE of Calama, Chile · 3053 days ago · 124 km deep · 22 km away
  7. 4.255 km NNE of Calama, Chile · 3043 days ago · 128 km deep · 34 km away
  8. 4.1120 km N of Calama, Chile · 3042 days ago · 123 km deep · 62 km away
  9. 4.566 km NNE of Calama, Chile · 3042 days ago · 106 km deep · 29 km away
  10. 4.2103 km NNE of Calama, Chile · 3040 days ago · 126 km deep · 17 km away
  11. 4.0107 km NE of San Pedro de Atacama, Chile · 3039 days ago · 223 km deep · 99 km away
  12. 4.0108 km NNE of Calama, Chile · 3035 days ago · 139 km deep · 30 km away
  13. 4.2131 km N of Calama, Chile · 3035 days ago · 133 km deep · 67 km away
  14. 4.2123 km N of Calama, Chile · 3034 days ago · 138 km deep · 55 km away
  15. 4.251 km N of Calama, Chile · 3021 days ago · 88 km deep · 60 km away

Before

  1. 4.495 km NE of Calama, Chile · 3082 days ago · 130 km deep · 13 km away
  2. 4.4153 km NNE of Calama, Chile · 3082 days ago · 135 km deep · 73 km away
  3. 4.3114 km NNE of Calama, Chile · 3083 days ago · 136 km deep · 29 km away
  4. 4.939 km E of Calama, Chile · 3083 days ago · 104 km deep · 76 km away · felt by 3
  5. 4.358 km NE of Calama, Chile · 3085 days ago · 116 km deep · 31 km away
  6. 5.0114 km N of Calama, Chile · 3089 days ago · 104 km deep · 53 km away · felt by 2
  7. 4.4106 km NNE of Calama, Chile · 3092 days ago · 135 km deep · 19 km away
  8. 4.3153 km N of Calama, Chile · 3095 days ago · 155 km deep · 84 km away
  9. 4.445 km NNE of San Pedro de Atacama, Chile · 3096 days ago · 140 km deep · 93 km away
  10. 4.18 km NNE of Calama, Chile · 3098 days ago · 109 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dt4d. Read Thu, Oct 1, 2026, 2:33 AM UTC.