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Major magnitude 8.5 earthquake - Provincia de Copiapo, 94 km east of Vallenar, Huasco, Atacama, Chile, on Saturday, November 11, 1922 at 04:32 GMT

Major magnitude 8.5 earthquake - Provincia de Copiapo, 94 km east of Vallenar, Huasco, Atacama, Chile, on Saturday, November 11, 1922 at 04:32 GMT

Major magnitude 8.5 earthquake at 70 km depth

Date & time: Nov 11, 1922 04:32:51 UTC
Magnitude: 8.5
Depth: 70.0 km
Epicenter latitude / longitude: 28.293°S / 69.852°W (Provincia de Copiapo, Atacama, Chile)
Antipode: 28.293°N / 110.148°E
Nearest volcano: Incapillo (112 km / 70 mi)
Nearby towns and cities:
94 km (59 mi) ENE of Vallenar (pop: 44,900) --> See nearby quakes!
113 km (70 mi) SSE of Copiapo (pop: 129,300) --> See nearby quakes!
215 km (134 mi) S of Diego de Almagro (pop: 18,100) --> See nearby quakes!
225 km (140 mi) NE of La Serena (Coquimbo) (pop: 154,500) --> See nearby quakes!
234 km (146 mi) NE of Coquimbo (pop: 161,300) --> See nearby quakes!
249 km (155 mi) WNW of Chilecito (La Rioja, Argentina) (pop: 42,200) --> See nearby quakes!
288 km (179 mi) NNE of Ovalle (Coquimbo) (pop: 77,100) --> See nearby quakes!
318 km (197 mi) WNW of Rioja (La Rioja, Argentina) (pop: 162,600) --> See nearby quakes!
579 km (360 mi) N of Santiago de Chile (Metropolitana) (pop: 4,837,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1017 joules (98559 gigawatt hours, equivalent to 8.5 x 107 tons of TNT or 5300.2 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.
Mag.DepthLocationSource
8.570 kmAtacama, 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.
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Aftershocks

[More info]

Recorded aftershocks, latest first (5 quakes)

Date and timeMag
Depth		LocationDetails
May 15, 1925 11:57
97 years ago
6.4

30 km		18 km S of Taltal, Provincia de Antofagasta, ChileMore
Jan 29, 1924 01:54
98 years ago
6.7

45 km		39 km N of Vallenar, Huasco, Atacama, ChileMore
May 4, 1923 22:26
99 years ago
6.5

35 km		68 km SW of Vallenar, Huasco, Atacama, ChileMore
Nov 17, 1922 11:02
100 years ago
6.7

15 km		118 km W of Coquimbo, Provincia de Elqui, Coquimbo Region, ChileMore
Nov 11, 1922 18:09
100 years ago
6.6

35 km		27 km NE of Vallenar, Huasco, Atacama, ChileMore

Earlier earthquakes in the same area

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