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Major magnitude 8.2 earthquake - 255 km east of Antofagasta, Chile, on Saturday, December 9, 1950 at 21:38 GMT

Major magnitude 8.2 earthquake - 255 km east of Antofagasta, Chile, on Saturday, December 9, 1950 at 21:38 GMT Major magnitude 8.2 earthquake - 255 km east of Antofagasta, Chile, on Saturday, December 9, 1950 at 21:38 GMT

Major magnitude 8.2 earthquake at 114 km depth

Earthquake details

Date & timeDec 9, 1950 21:38:51 UTC
Local time at epicenter
Depth113.9 km
Epicenter latitude / longitude23.977°S / 67.912°W (El Loa, Antofagasta, Chile)
Antipode23.977°N / 112.088°E
Shaking intensityVery strong shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoCapur (8 km / 5 mi)
Nearby towns and cities122 km (76 mi) SSE of San Pedro de Atacama (pop: 2,000) | Show on map | Quakes nearby
198 km (123 mi) SSE of Calama (pop: 143,100) | Show on map | Quakes nearby
255 km (159 mi) E of Antofagasta (pop: 309,800) | Show on map | Quakes nearby
267 km (166 mi) W of Jujuy (Argentina) (pop: 305,900) | Show on map | Quakes nearby
269 km (167 mi) WNW of Salta (Argentina) (pop: 512,700) | Show on map | Quakes nearby
276 km (171 mi) W of Palpala (Jujuy, Argentina) (pop: 48,200) | Show on map | Quakes nearby
311 km (193 mi) W of San Pedro de Jujuy (Argentina) (pop: 58,400) | Show on map | Quakes nearby
314 km (195 mi) SE of Tocopilla (pop: 24,500) | Show on map | Quakes nearby
342 km (212 mi) NE of Diego de Almagro (Atacama) (pop: 18,100) | Show on map | Quakes nearby
448 km (279 mi) NNE of Copiapo (Atacama) (pop: 129,300) | Show on map | Quakes nearby
Estimated seismic energy released1.3 x 1017 joules (34970 gigawatt hours, equivalent to 3 x 107 tons of TNT or 1880.6 atomic bombs!) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
8.2114 kmAntofagasta, ChileUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.


[More info]

Recorded aftershocks, latest first (2 quakes)

Date and timeMag
May 24, 1952 01:59
71 years ago

25 km
111 km SW of Iquique, Tarapaca, ChileMore
May 15, 1951 05:18
72 years ago

53 km
Tarapaca, 78 km NE of Tocopilla, Antofagasta, ChileMore

Earlier earthquakes in the same area

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