Very strong mag. 6.6 earthquake - 27 km northeast of Vallenar, Huasco, Atacama, Chile, on Saturday, November 11, 1922 at 18:09 GMT
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Very strong magnitude 6.6 earthquake at 35 km depth
Earthquake details
| Date & time | Nov 11, 1922 18:09:31 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 6.6 |
| Depth | 35.0 km |
| Epicenter latitude / longitude | 28.389°S / 70.58°W  (Huasco, Atacama, Chile) |
| Antipode | 28.389°N / 109.42°E |
| Shaking intensity | Strong shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Incapillo (183 km / 114 mi) |
| Nearby towns and cities | 27 km (17 mi) NE of Vallenar (pop: 44,900) | Show on map | Quakes nearby 116 km (72 mi) SSW of Copiapo (pop: 129,300) | Show on map | Quakes nearby 181 km (112 mi) NNE of La Serena (Coquimbo) (pop: 154,500) | Show on map | Quakes nearby 184 km (114 mi) N of Vicuña (Coquimbo) (pop: 13,500) | Show on map | Quakes nearby 189 km (117 mi) NNE of Coquimbo (pop: 161,300) | Show on map | Quakes nearby 231 km (144 mi) SSW of Diego de Almagro (pop: 18,100) | Show on map | Quakes nearby 253 km (157 mi) NNE of Ovalle (Coquimbo) (pop: 77,100) | Show on map | Quakes nearby 365 km (227 mi) N of Illapel (Choapa, Coquimbo) (pop: 22,800) | Show on map | Quakes nearby 564 km (350 mi) N of Santiago de Chile (Metropolitana) (pop: 4,837,300) | Show on map | Quakes nearby |
| Estimated seismic energy released | 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 atomic bombs!) | about seismic energy |
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 |
| 6.6 | 35 km | Atacama, Chile | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Aftershocks
[More info]
Recorded aftershocks, latest first (1 quake)
Date and time | Mag Depth | Location | Details |
| May 4, 1923 22:26 99 years ago | 6.5 35 km | Atacama, Chile | More |
Earlier earthquakes in the same area
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