Light mag. 4.5 earthquake - SALTA, ARGENTINA, on Monday, Oct 18, 2021 8:27 am (GMT -3) -

Light mag. 4.5 earthquake - SALTA, ARGENTINA, on Monday, Oct 18, 2021 8:27 am (GMT -3)

Light magnitude 4.5 earthquake at 224 km depth

18 Oct 11:32 UTC: First to report: EMSC after 5 minutes.
18 Oct 11:37: Magnitude recalculated from 4.4 to 4.1. Hypocenter depth recalculated from 190.0 to 215.0 km (from 118 to 134 mi). Epicenter location corrected by 28 km (18 mi) towards ENE.
18 Oct 11:46: Magnitude recalculated from 4.1 to 4.5. Hypocenter depth recalculated from 215.0 to 219.0 km (from 134 to 136 mi). Epicenter location corrected by 22 km (13 mi) towards W.
18 Oct 17:32: Hypocenter depth recalculated from 219.0 to 224.0 km (from 136 to 139 mi). Epicenter location corrected by 4.2 km (2.6 mi) towards ENE.
Date & time: Oct 18, 2021 11:27:12 UTC -
Local time at epicenter: Monday, Oct 18, 2021 8:27 am (GMT -3)
Magnitude: 4.5
Depth: 224.0 km
Epicenter latitude / longitude: 24.09°S / 67.29°W (Los Andes Department, Antofagasta, Chile)
Antipode: 24.09°N / 112.71°E
Nearest volcano: Aracar (40 km / 25 mi)
Nearby towns and cities:
100 km (62 mi) W of San Antonio de los Cobres (Salta, Argentina) (pop: 4,000) --> See nearby quakes!
161 km (100 mi) SE of San Pedro de Atacama (Antofagasta) (pop: 2,000) --> See nearby quakes!
203 km (126 mi) W of Jujuy (Argentina) (pop: 305,900) --> See nearby quakes!
205 km (128 mi) WNW of Salta (Argentina) (pop: 512,700) --> See nearby quakes!
212 km (132 mi) W of Palpala (Jujuy, Argentina) (pop: 48,200) --> See nearby quakes!
246 km (153 mi) W of San Pedro de Jujuy (Argentina) (pop: 58,400) --> See nearby quakes!
247 km (153 mi) SE of Calama (Antofagasta) (pop: 143,100) --> See nearby quakes!
256 km (159 mi) W of Libertador General San Martin (Jujuy, Argentina) (pop: 49,300) --> See nearby quakes!
282 km (175 mi) SW of Villazon (Modesto Omiste, Potosí, Bolivia) (pop: 30,300) --> See nearby quakes!
320 km (199 mi) E of Antofagasta (pop: 309,800) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 0.7°C (33 F), humidity: 8%, wind: 3 m/s (6 kts) from WNW
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) More info
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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
4.5224 kmSALTA, ARGENTINAEMSC
3.8184 kmSALTA (Argentina)INPRES
4.5219 km103 Km W of San Antonio De Los Cobres, ArgentinaUSGS
4.0189 kmChile-Argentina Border RegionGFZ

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Antofagasta (318.1 km W of epicenter) [Map] / not felt (reported through our app)
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