M4.3 earthquake 119 km N of Calama, Chile
A magnitude 4.3 earthquake struck 119 km N of Calama, Chile on Tue, Jul 21, 2020, 5:04 PM GMT-4 (21:04 UTC), 103 km (64 mi) below the surface.
A larger quake followed: M4.9 161 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
- 4.3 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-07-21 21:04:32 UTC
- Depth
- 102.9 km (63.9 mi), intermediate-depth
- Epicenter
- 21.392° S, 68.749° 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
- Oblique normal
- Moment magnitude
- 4.3 Mwr
- Nodal plane 1
- Strike 177°, dip 21°, rake -53°
- Nodal plane 2
- Strike 318°, dip 73°, rake -103°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.3 km horizontally, 5.0 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 50°
- Stations used
- 29
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 8 in the 30 days before it.
After
- 4.072 km NNE of Calama, Chile · 2263 days ago · 125 km deep · 49 km away
- 4.1158 km ESE of Iquique, Chile · 2261 days ago · 108 km deep · 52 km away
- 4.061 km NNE of Calama, Chile · 2255 days ago · 121 km deep · 59 km away
- 4.1144 km ESE of Iquique, Chile · 2255 days ago · 118 km deep · 64 km away
- 4.3128 km N of Calama, Chile · 2252 days ago · 138 km deep · 9 km away
- 4.1149 km NNE of Calama, Chile · 2246 days ago · 156 km deep · 33 km away
- 4.251 km NNE of Calama, Chile · 2227 days ago · 120 km deep · 74 km away
- 4.395 km NNE of Calama, Chile · 2213 days ago · 122 km deep · 45 km away
- 4.6136 km ESE of Iquique, Chile · 2212 days ago · 124 km deep · 67 km away · felt by 1
- 4.2127 km ESE of Iquique, Chile · 2210 days ago · 120 km deep · 73 km away · felt by 3
- 4.9161 km N of Calama, Chile · 2204 days ago · 124 km deep · 43 km away · felt by 6
Before
- 4.946 km NE of Calama, Chile · 2264 days ago · 122 km deep · 92 km away
- 4.166 km NNE of Calama, Chile · 2264 days ago · 128 km deep · 61 km away
- 4.174 km NNE of Calama, Chile · 2265 days ago · 127 km deep · 57 km away
- 4.1144 km NNE of Calama, Chile · 2265 days ago · 132 km deep · 30 km away
- 4.0167 km ESE of Iquique, Chile · 2271 days ago · 122 km deep · 49 km away
- 4.2148 km N of Calama, Chile · 2272 days ago · 117 km deep · 34 km away
- 4.1117 km SE of Iquique, Chile · 2275 days ago · 60 km deep · 79 km away · felt by 2
- 4.383 km NNE of Calama, Chile · 2287 days ago · 124 km deep · 54 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000asmw. Read Fri, Oct 2, 2026, 8:51 AM UTC.