M4.4 earthquake 33 km NE of Calama, Chile
A magnitude 4.4 earthquake struck 33 km NE of Calama, Chile on Mon, Oct 2, 2017, 7:07 PM GMT-3 (22:07 UTC), 107 km (67 mi) below the surface.
A larger quake followed: M5.5 42 km ENE 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
- 4.4 (mwr), light
- Local time
- UTC
- 2017-10-02 22:07:54 UTC
- Depth
- 107.3 km (66.7 mi), intermediate-depth
- Epicenter
- 22.241° S, 68.691° 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
- 4.4 Mwr
- Nodal plane 1
- Strike 356°, dip 68°, rake -80°
- Nodal plane 2
- Strike 152°, dip 24°, rake -113°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.3 km horizontally, 4.4 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 29°
- Stations used
- 118
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.542 km ENE of Calama, Chile · 3283 days ago · 110 km deep · 24 km away · felt by 5
- 4.5Antofagasta, Chile · 3273 days ago · 112 km deep · 68 km away
- 4.042 km SW of Calama, Chile · 3267 days ago · 87 km deep · 76 km away
- 4.032 km SSE of Calama, Chile · 3258 days ago · 98 km deep · 58 km away
- 4.087 km NE of Calama, Chile · 3257 days ago · 106 km deep · 54 km away
- 4.2105 km NNE of Calama, Chile · 3252 days ago · 122 km deep · 75 km away
- 4.845 km NE of Calama, Chile · 3250 days ago · 125 km deep · 12 km away
- 4.142 km NE of Calama, Chile · 3248 days ago · 134 km deep · 11 km away
- 4.084 km NNE of Calama, Chile · 3244 days ago · 123 km deep · 56 km away
- 4.558 km NNE of Calama, Chile · 3238 days ago · 117 km deep · 33 km away
- 3.961 km NNE of Calama, Chile · 3229 days ago · 122 km deep · 32 km away
- 4.156 km NNE of San Pedro de Atacama, Chile · 3225 days ago · 155 km deep · 84 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000ayh7. Read Wed, Sep 30, 2026, 10:18 PM UTC.