M4.4 earthquake 103 km NNE of Calama, Chile
A magnitude 4.4 earthquake struck 103 km NNE of Calama, Chile on Thu, Sep 23, 2021, 8:01 AM GMT-3 (11:01 UTC), 105 km (65 mi) below the surface.
A larger quake followed: M4.8 148 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
- 4.4 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-09-23 11:01:55 UTC
- Depth
- 105.1 km (65.3 mi), intermediate-depth
- Epicenter
- 21.600° S, 68.534° 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 345°, dip 80°, rake -118°
- Nodal plane 2
- Strike 236°, dip 29°, rake -21°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.6 km horizontally, 5.3 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 43°
- Stations used
- 60
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.028 km ENE of Calama, Chile · 1831 days ago · 126 km deep · 89 km away
- 4.4138 km ESE of Iquique, Chile · 1830 days ago · 109 km deep · 95 km away · felt by 3
- 4.2150 km N of Calama, Chile · 1828 days ago · 136 km deep · 56 km away
- 4.5157 km N of Calama, Chile · 1828 days ago · 131 km deep · 62 km away · felt by 1
- 4.1101 km NNE of Calama, Chile · 1828 days ago · 130 km deep · 11 km away
- 4.799 km NNE of Calama, Chile · 1827 days ago · 103 km deep · 18 km away
- 4.2102 km N of Calama, Chile · 1822 days ago · 103 km deep · 50 km away
- 4.374 km N of Calama, Chile · 1820 days ago · 105 km deep · 36 km away
- 4.8148 km N of Calama, Chile · 1819 days ago · 114 km deep · 64 km away · felt by 3
- 4.386 km NNE of Calama, Chile · 1818 days ago · 126 km deep · 21 km away
- 4.2140 km NNE of Calama, Chile · 1811 days ago · 125 km deep · 38 km away
- 4.344 km NW of Calama, Chile · 1807 days ago · 107 km deep · 91 km away · felt by 2
- 4.151 km NNE of Calama, Chile · 1805 days ago · 121 km deep · 52 km away
- 4.2146 km NNE of Calama, Chile · 1799 days ago · 138 km deep · 49 km away
- 4.1106 km NNE of Calama, Chile · 1792 days ago · 128 km deep · 4 km away
- 4.355 km N of Calama, Chile · 1782 days ago · 119 km deep · 51 km away
- 4.6163 km ESE of Iquique, Chile · 1779 days ago · 115 km deep · 79 km away · felt by 7
- 4.0138 km N of Calama, Chile · 1777 days ago · 117 km deep · 58 km away
Before
- 4.339 km NE of Calama, Chile · 1843 days ago · 132 km deep · 68 km away
- 4.3160 km N of Calama, Chile · 1846 days ago · 104 km deep · 69 km away
- 4.1107 km NE of Calama, Chile · 1851 days ago · 137 km deep · 23 km away
- 4.6139 km NNE of San Pedro de Atacama, Chile · 1860 days ago · 216 km deep · 89 km away
- 4.5149 km SW of Uyuni, Bolivia · 1864 days ago · 206 km deep · 69 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000fdri. Read Sat, Oct 3, 2026, 1:13 AM UTC.