Light mag. 3.0 earthquake - 63 km northeast of Ciudad de San Juan, Departamento de Capital, San Juan, Argentina, on Saturday, Oct 23, 2021 at 3:59 pm (GMT -3) -
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Light magnitude 3.0 earthquake at 10 km depth
23 Oct 19:06 UTC: First to report: INPRES after 7 minutes.
Local time at epicenter: Saturday, Oct 23, 2021 at 3:59 pm (GMT -3)
Magnitude: 3
Depth: 10.0 km
Epicenter latitude / longitude: 31.07°S / 68.16°W

Antipode: 31.07°N / 111.84°E
Nearby towns and cities:
51 km (32 mi) NE of San Martin (pop: 10,100) --> See nearby quakes!
54 km (33 mi) NE of Albardon (pop: 20,400) --> See nearby quakes!
58 km (36 mi) NE of Chimbas (pop: 73,800) --> See nearby quakes!
59 km (37 mi) NE of Villa Paula de Sarmiento (pop: 19,100) --> See nearby quakes!
61 km (38 mi) NNE of Santa Lucia (pop: 43,600) --> See nearby quakes!
63 km (39 mi) NE of Ciudad de San Juan (pop: 447,000) --> See nearby quakes!
66 km (41 mi) N of Caucete (pop: 33,600) --> See nearby quakes!
70 km (44 mi) NNE of Nueve de Julio (pop: 7,650) --> See nearby quakes!
79 km (49 mi) NNE of Pocito (pop: 41,000) --> See nearby quakes!
995 km (618 mi) WNW of Buenos Aires (Buenos Aires C.F.) (pop: 13,076,300) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
24.7°C (76 F), humidity: 17%, wind: 2 m/s (3 kts) from SW
Primary data source: INPRES
Clear Sky

Estimated released energy: 2 x 109 joules (554 kilowatt hours, equivalent to 0.477 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 |
3.0 | 10 km | SAN JUAN (Argentina) | INPRES |
3.0 | 10 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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