Minor mag. 3.1 earthquake - 182 km northwest of Salta, Departamento Capital, Salta, Argentina, on Friday, Oct 22, 2021 at 7:40 pm (GMT -3) -
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Minor magnitude 3.1 earthquake at 155 km depth
22 Oct 22:48 UTC: First to report: INPRES after 7 minutes.
22 Oct 23:20: Hypocenter depth recalculated from 241.0 to 155.0 km (from 150 to 96 mi). Epicenter location corrected by 27 km (17 mi) towards N.
22 Oct 23:20: Hypocenter depth recalculated from 241.0 to 155.0 km (from 150 to 96 mi). Epicenter location corrected by 27 km (17 mi) towards N.
Local time at epicenter: Friday, Oct 22, 2021 at 7:40 pm (GMT -3)
Magnitude: 3.1
Depth: 155.0 km
Epicenter latitude / longitude: 24.104°S / 67.048°W

Antipode: 24.104°N / 112.952°E
Nearest volcano: Aracar (74 km / 46 mi)
Nearby towns and cities:
75 km (47 mi) W of San Antonio de los Cobres (pop: 4,000) --> See nearby quakes!
116 km (72 mi) WNW of Santa Rosa de Tastil (pop: 2,000) --> See nearby quakes!
162 km (101 mi) WSW of Purmamarca (Jujuy) (pop: 388) --> See nearby quakes!
169 km (105 mi) WNW of Campo Quijano (pop: 5,000) --> See nearby quakes!
171 km (106 mi) SW of Aguilar (Jujuy) (pop: 3,660) --> See nearby quakes!
177 km (110 mi) SE of San Pedro de Atacama (Antofagasta, Chile) (pop: 2,000) --> See nearby quakes!
182 km (113 mi) WNW of Salta (pop: 512,700) --> See nearby quakes!
191 km (119 mi) NW of El Carril (Chicoana) (pop: 9,780) --> See nearby quakes!
207 km (128 mi) SW of Abra Pampa (Cochinoca, Jujuy) (pop: 9,430) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
10°C (50 F), humidity: 13%, wind: 10 m/s (20 kts) from WNW
Primary data source: INPRES
Clear Sky

Estimated released energy: 2.8 x 109 joules (783 kilowatt hours, equivalent to 0.674 tons of TNT) | 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 |
3.1 | 155 km | SALTA (Argentina) | INPRES |
3.1 | 233 km | SALTA, ARGENTINA | EMSC |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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