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Light mag. 4.1 earthquake - 285 km west of Salta, Departamento Capital, Salta, Argentina, on 11/04/2021 11:52:32

Light mag. 4.1 earthquake - 285 km west of Salta, Departamento Capital, Salta, Argentina, on 11/04/2021 11:52:32 Light mag. 4.1 earthquake - 285 km west of Salta, Departamento Capital, Salta, Argentina, on 11/04/2021 11:52:32

Light magnitude 4.1 earthquake at 109 km depth

11 Apr 14:58 UTC: First to report: INPRES after 6 minutes.
11 Apr 15:42: Magnitude recalculated from 3.9 to 4.1. Hypocenter depth recalculated from 156.0 to 109.0 km (from 97 to 68 mi). Epicenter location corrected by 10.1 km (6.3 mi) towards E.

Earthquake details

Date & timeApr 11, 2021 14:52:32 UTC
Local time at epicenter11/04/2021 11:52:32
StatusConfirmed
Magnitude4.1
Depth109.0 km
Epicenter latitude / longitude24.788°S / 68.231°W (Departamento de Los Andes, Salta, Argentina)
Antipode24.788°N / 111.769°E
Shaking intensityVery weak shaking
Felt0 reports
Primary data sourceINPRES
Nearest volcanoLlullaillaco (22 km / 14 mi)
Nearby towns and cities164 km (102 mi) NNW of Antofagasta de la Sierra (Catamarca) (pop: 500) | Show on map | Quakes nearby
204 km (127 mi) WSW of San Antonio de los Cobres (pop: 4,000) | Show on map | Quakes nearby
253 km (157 mi) NE of Diego de Almagro (Atacama, Chile) (pop: 18,100) | Show on map | Quakes nearby
253 km (157 mi) ESE of Antofagasta (Chile) (pop: 309,800) | Show on map | Quakes nearby
262 km (163 mi) W of Campo Quijano (pop: 5,000) | Show on map | Quakes nearby
268 km (166 mi) WNW of Cafayate (pop: 11,800) | Show on map | Quakes nearby
269 km (167 mi) SSE of Calama (Antofagasta, Chile) (pop: 143,100) | Show on map | Quakes nearby
278 km (173 mi) W of El Carril (Chicoana) (pop: 9,780) | Show on map | Quakes nearby
285 km (177 mi) W of Salta (pop: 512,700) | Show on map | Quakes nearby
380 km (236 mi) NW of Monteros (Tucumán) (pop: 23,800) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 14.4°C (58 F), humidity: 4%, wind: 0 m/s (1 kts) from ENE
Estimated seismic energy released8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) | about seismic energy
Show interactive Map
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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
4.1109 kmSALTA (Argentina)INPRES
4.2140 km79 Km Al SE De Mina La Escondida., ArgentinaGUG (U. Chile)
4.6123 kmSALTA, ARGENTINAEMSC
4.6109 km150 Km NNW of Antofagasta De La Sierra, ArgentinaUSGS
4.4156 kmChile-Argentina Border RegionGFZ
4.3109 kmChile-Argentina Border RegionUSP

Seismograms

Seismic station: Las Campanas Astronomical Observatory, Chile (LCO/IU network) | Distance from quake: 530 km / 329 mi | Show on map | Station Info
Seismic station Las Campanas Astronomical Observatory, Chile: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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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.

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