Major magnitude 7.3 earthquake - Departamento de Alberdi, 143 km northeast of Santiago del Estero, Departamento de Capital, Santiago del Estero, Argentina, on Sunday, June 23, 1991 at 21:22 (GMT)
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Major magnitude 7.3 earthquake at 558 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 558.0 km
Epicenter latitude / longitude: 26.802°S / 63.349°W↗ (Departamento de Alberdi, Provincia de Santiago del Estero, Argentina)
Antipode: 26.802°N / 116.651°E↗
Nearby towns and cities:
28 km (17 mi) NNW of El Hoyo (pop: 2,160) --> See nearby quakes!
55 km (34 mi) WSW of Campo Gallo (Alberdi) (pop: 5,460) --> See nearby quakes!
68 km (43 mi) WNW of Tintina (pop: 3,870) --> See nearby quakes!
143 km (89 mi) NE of Ciudad de Santiago del Estero (pop: 354,700) --> See nearby quakes!
168 km (104 mi) ENE of Termas de Rio Hondo (Río Hondo) (pop: 27,800) --> See nearby quakes!
177 km (110 mi) E of Alderetes (Tucuman) (pop: 38,500) --> See nearby quakes!
186 km (116 mi) E of San Miguel de Tucuman (pop: 781,000) --> See nearby quakes!
190 km (118 mi) E of Tafi Viejo (Tucuman) (pop: 48,500) --> See nearby quakes!
195 km (121 mi) E of Yerba Buena (Tucuman) (pop: 50,800) --> See nearby quakes!
990 km (615 mi) NNW of Buenos Aires (Buenos Aires F.D.) (pop: 13,076,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5.6 x 1015 joules (1562 gigawatt hours, equivalent to 1.3 x 106 tons of TNT or 84 atomic bombs!) 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.
|7.3||558 km||Santiago Del Estero, Argentina||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Recorded aftershocks, latest first (2 quakes)
- 29 Feb 1992 16:17 UTC| M 5.2 |23.2 km (14.4 mi) depth|158 km (98 mi) distance| USGS | Details
- 23 Jun 1991 23:14 UTC| M 5.6 |578.4 km (359.4 mi) depth|17 km (11 mi) distance| USGS | Details