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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 at 70 km depth

Earthquake details

Date & time	Nov 11, 1922 04:32:51 UTC
Local time at epicenter
Status	Confirmed
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
Shaking intensity	Severe shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Incapillo (112 km / 70 mi)
Nearby towns and cities	94 km (59 mi) ENE of Vallenar (pop: 44,900) \| Show on map \| Quakes nearby 113 km (70 mi) SSE of Copiapo (pop: 129,300) \| Show on map \| Quakes nearby 215 km (134 mi) S of Diego de Almagro (pop: 18,100) \| Show on map \| Quakes nearby 225 km (140 mi) NE of La Serena (Coquimbo) (pop: 154,500) \| Show on map \| Quakes nearby 234 km (146 mi) NE of Coquimbo (pop: 161,300) \| Show on map \| Quakes nearby 249 km (155 mi) WNW of Chilecito (La Rioja, Argentina) (pop: 42,200) \| Show on map \| Quakes nearby 288 km (179 mi) NNE of Ovalle (Coquimbo) (pop: 77,100) \| Show on map \| Quakes nearby 318 km (197 mi) WNW of Rioja (La Rioja, Argentina) (pop: 162,600) \| Show on map \| Quakes nearby 579 km (360 mi) N of Santiago de Chile (Metropolitana) (pop: 4,837,300) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	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.	Depth	Location	Source
8.5	70 km	Atacama, Chile	USGS

Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

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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.

Aftershocks

[More info]

Recorded aftershocks, latest first (5 quakes)

Date and time	Mag Depth	Location	Details
May 15, 1925 11:57 98 years ago	6.4 30 km	18 km S of Taltal, Provincia de Antofagasta, Chile	More
Jan 29, 1924 01:54 99 years ago	6.7 45 km	39 km N of Vallenar, Huasco, Atacama, Chile	More
May 4, 1923 22:26 100 years ago	6.5 35 km	68 km SW of Vallenar, Huasco, Atacama, Chile	More
Nov 17, 1922 11:02 101 years ago	6.7 15 km	118 km W of Coquimbo, Provincia de Elqui, Coquimbo Region, Chile	More
Nov 11, 1922 18:09 101 years ago	6.6 35 km	27 km NE of Vallenar, Huasco, Atacama, Chile	More

Earlier earthquakes in the same area

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