Minor mag. 3.1 earthquake - 24 km north of Ciudad de San Juan, Departamento de Capital, San Juan, Argentina, on Sunday, Oct 24, 2021 at 12:52 pm (GMT -3) -


Minor magnitude 3.1 earthquake at 103 km depth
24 Oct 16:04 UTC: First to report: INPRES after 11 minutes.
25 Oct 07:58: Magnitude recalculated from 3.0 to 3.1. Hypocenter depth recalculated from 85.0 to 103.0 km (from 53 to 64 mi). Epicenter location corrected by 2.8 km (1.8 mi) towards NW.
25 Oct 07:58: Magnitude recalculated from 3.0 to 3.1. Hypocenter depth recalculated from 85.0 to 103.0 km (from 53 to 64 mi). Epicenter location corrected by 2.8 km (1.8 mi) towards NW.
Local time at epicenter: Sunday, Oct 24, 2021 at 12:52 pm (GMT -3)
Magnitude: 3.1
Depth: 103.0 km
Epicenter latitude / longitude: 31.325°S / 68.604°W

Antipode: 31.325°N / 111.396°E
Nearby towns and cities:
15 km (9 mi) NNW of Albardon (pop: 20,400) --> See nearby quakes!
15 km (9 mi) NW of San Martin (pop: 10,100) --> See nearby quakes!
19 km (12 mi) NNW of Chimbas (pop: 73,800) --> See nearby quakes!
20 km (12 mi) NNW of Villa Paula de Sarmiento (pop: 19,100) --> See nearby quakes!
24 km (15 mi) NNW of Ciudad de San Juan (pop: 447,000) --> See nearby quakes!
26 km (16 mi) NNW of Santa Lucia (pop: 43,600) --> See nearby quakes!
28 km (17 mi) NNE of Villa Basilio Nievas (pop: 4,040) --> See nearby quakes!
40 km (25 mi) N of Pocito (pop: 41,000) --> See nearby quakes!
43 km (27 mi) NNW of Nueve de Julio (pop: 7,650) --> See nearby quakes!
48 km (30 mi) NW of Caucete (pop: 33,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
22.4°C (72 F), humidity: 15%, wind: 4 m/s (7 kts) from NE
Primary data source: INPRES
Clear Sky

Estimated released energy: 2.8 x 109 joules (783 kilowatt hours, equivalent to 0.674 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 |
3.1 | 103 km | SAN JUAN (Argentina) | INPRES |
3.0 | 85 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.
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!