Moderate mag. 4.8 earthquake - Departamento de Sarmiento, 27 km southwest of Pocito, San Juan, Argentina, on Tuesday, 19 Jan 2021 1:01 am (GMT -3) -
This quake was likely an aftershock of the 6.4 quake Departamento de Sarmiento, 20 km southwest of Pocito, San Juan, Argentina, 18 Jan 2021 11:46 pm (GMT -3), which had occurred 1 hour and 15 minutes earlier.
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Moderate magnitude 4.8 earthquake at 10 km depth
19 Jan 04:20 UTC: First to report: USGS after 18 minutes.
20 Jan 01:30: Hypocenter depth recalculated from 14.9 to 10.0 km (from 9.3 to 6.2 mi). Epicenter location corrected by 3 km (1.9 mi) towards S.
20 Jan 01:30: Hypocenter depth recalculated from 14.9 to 10.0 km (from 9.3 to 6.2 mi). Epicenter location corrected by 3 km (1.9 mi) towards S.
Date & time: 19 Jan 2021 04:01:41 UTC -
Local time at epicenter: Tuesday, 19 Jan 2021 1:01 am (GMT -3)
Magnitude: 4.8
Depth: 10.0 km
Epicenter latitude / longitude: 31.8336°S / 68.8113°W

Nearest volcano: Tupungatito (200 km / 124 mi)
Nearby towns and cities:
27 km (17 mi) SW of Pocito (pop: 41,000) --> See nearby quakes!
42 km (26 mi) SW of San Juan (pop: 447,000) --> See nearby quakes!
44 km (27 mi) WSW of Nueve de Julio (pop: 7,650) --> See nearby quakes!
44 km (28 mi) SW of Santa Lucia (pop: 43,600) --> See nearby quakes!
46 km (28 mi) SW of Villa Paula de Sarmiento (pop: 19,100) --> See nearby quakes!
47 km (29 mi) SSW of Chimbas (pop: 73,800) --> See nearby quakes!
52 km (32 mi) SSW of Albardon (pop: 20,400) --> See nearby quakes!
54 km (34 mi) WSW of Caucete (pop: 33,600) --> See nearby quakes!
118 km (73 mi) N of Mendoza (pop: 876,900) --> See nearby quakes!
249 km (155 mi) NE of Santiago de Chile (Santiago Metropolitan, Chile) (pop: 4,837,300) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds
21.1°C (70 F), humidity: 24%, wind: 4 m/s (7 kts) from S
Primary data source: USGS (United States Geological Survey)Broken Clouds

Estimated released energy: 1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) More info
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.
Magnitude | Depth | Location | Source |
M 4.8 | 10 km | 27 Km SW of Pocito, Argentina | USGS |
M 4.8 | 15 km | SAN JUAN, 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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There are no user reports for this quake yet. If you felt it Earlier earthquakes in the same area since 1900
- Date / time UTC| Mag |Depth|Age|Distance| Details
- 09 Jul 1971 03:03| 7.8 |60km / 37mi|50 years ago|230km / 143mi| Provincia de San Felipe de Aconcagua, 24 km NE of Hacienda La Calera, Provincia de Quillota, Valparaiso, Chile
- 23 Nov 1977 09:26| 7.4 |13km / 8.1mi|43 years ago|134km / 83mi| Departamento de Albardon, 93 km NE of San Juan, Departamento de Capital, San Juan, Argentina
- 28 Mar 1965 16:33| 7.4 |70km / 43mi|56 years ago|240km / 149mi| 7.7 km S of La Ligua, Petorca Province, Valparaiso, Chile
- 15 Oct 1997 01:03| 7.1 |58km / 36mi|23 years ago|250km / 155mi| 37 km S of Ovalle, Provincia de Limari, Coquimbo Region, Chile
- 16 Sep 2015 23:18| 7.0 |31km / 19mi|5 years ago|249km / 155mi| Choapa, 25 km W of Illapel, Provincia de Choapa, Coquimbo Region, Chile
- 15 Jan 1944 23:49| 7.0 |15km / 9.3mi|77 years ago|62km / 39mi| Departamento de Angaco, 8.9 km NE of San Martin, San Juan, Argentina
- 19 Jan 2021 02:46| 6.4 |14km / 8.7mi|6 weeks ago|7km / 4mi| Departamento de Sarmiento, 20 km SW of Pocito, San Juan, Argentina
- 11 Jun 1952 00:31| 6.5 |25km / 16mi|69 years ago|36km / 22mi| 9.6 km E of Pocito, San Juan, Argentina
- 20 Nov 2016 20:57| 6.4 |99km / 62mi|4 years ago|27km / 17mi| 9.4 km NW of Pocito, San Juan, Argentina
- 24 Sep 2002 03:57| 6.3 |120km / 74mi|18 years ago|51km / 32mi| Departamento de Calingasta, 63 km W of Chimbas, San Juan, Argentina
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