Minor mag. 3.2 earthquake - Salta, Argentina, on Wednesday, Oct 20, 2021 at 11:12 am (GMT -3) -
Quake Data | Interactive map | User Reports | Earlier quakes here | Quakes in Argentina | Quakes in Chile | Salta | Antofagasta


Minor magnitude 3.2 earthquake at 181 km depth
20 Oct 14:18 UTC: First to report: INPRES after 5 minutes.
20 Oct 14:38: Hypocenter depth recalculated from 201.0 to 181.0 km (from 125 to 112 mi). Epicenter location corrected by 17 km (10.5 mi) towards N.
20 Oct 14:38: Hypocenter depth recalculated from 201.0 to 181.0 km (from 125 to 112 mi). Epicenter location corrected by 17 km (10.5 mi) towards N.
Local time at epicenter: Wednesday, Oct 20, 2021 at 11:12 am (GMT -3)
Magnitude: 3.2
Depth: 181.0 km
Epicenter latitude / longitude: 24.159°S / 67.277°W

Antipode: 24.159°N / 112.723°E
Nearest volcano: Aracar (48 km / 30 mi)
Nearby towns and cities:
97 km (61 mi) W of San Antonio de los Cobres (pop: 4,000) --> See nearby quakes!
136 km (84 mi) WNW of Santa Rosa de Tastil (pop: 2,000) --> See nearby quakes!
168 km (104 mi) SE of San Pedro de Atacama (Antofagasta, Chile) (pop: 2,000) --> See nearby quakes!
201 km (125 mi) WNW of Salta (pop: 512,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
11.2°C (52 F), humidity: 4%, wind: 7 m/s (15 kts) from WNW
Primary data source: INPRES
Clear Sky

Estimated released energy: 4 x 109 joules (1.11 megawatt hours, equivalent to 0.951 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 |
3.2 | 181 km | SALTA (Argentina) | INPRES |
3.2 | 198 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.
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!