M4.2 earthquake 12 km N of Calama, Chile
A magnitude 4.2 earthquake struck 12 km N of Calama, Chile on Mon, Jul 31, 2017, 4:00 AM GMT-4 (08:00 UTC), 115 km (71 mi) below the surface.
A larger quake followed: M4.7 22 km SE 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
- 4.2 (mb), light
- Local time
- UTC
- 2017-07-31 08:00:42 UTC
- Depth
- 114.8 km (71.3 mi), intermediate-depth
- Epicenter
- 22.349° S, 68.936° 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 4.9 km horizontally, 4.3 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- From location
- Station coverage gap
- 76°
- Stations used
- 43
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.280 km NNE of Calama, Chile · 3347 days ago · 120 km deep · 72 km away
- 4.722 km SE of Calama, Chile · 3337 days ago · 98 km deep · 32 km away
- 4.4107 km NNE of Calama, Chile · 3336 days ago · 117 km deep · 97 km away
- 4.2100 km NNE of Calama, Chile · 3334 days ago · 127 km deep · 91 km away
- 4.338 km NE of Calama, Chile · 3316 days ago · 131 km deep · 34 km away
Before
- 4.339 km SSW of Calama, Chile · 3355 days ago · 85 km deep · 50 km away
- 4.676 km NE of Calama, Chile · 3356 days ago · 114 km deep · 68 km away
- 4.560 km ENE of Calama, Chile · 3368 days ago · 144 km deep · 60 km away
- 4.344 km E of Calama, Chile · 3373 days ago · 141 km deep · 47 km away
- 5.476 km NNE of Calama, Chile · 3377 days ago · 108 km deep · 67 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000a2uj. Read Wed, Sep 30, 2026, 11:43 PM UTC.