2025-10-28 18:17:46 (M4.7) Chile-Argentina border region -31.0 -69.5 (90be5)

M4.7 Earthquake - Chile-Argentina border region

Preliminary Report

Magnitude	4.7
Date-Time	Universal Time (UTC): 28 Oct 2025 18:17:46 Time near the Epicenter (1): 28 Oct 2025 15:17:46 Time in your area (1): 28 Oct 2025 10:17:46
Location	30.952S 69.478W
Depth	111 km
Distances	42.7 km (26.5 mi) N of Calingasta, Argentina 105.5 km (65.4 mi) SW of San José de Jáchal, Argentina 105.5 km (65.4 mi) WNW of Albardón, Argentina 107.2 km (66.5 mi) WNW of San Martín, Argentina 110.8 km (68.7 mi) NW of San Juan, Argentina
Location Uncertainty	Horizontal: 4.6 km; Vertical 5.8 km
Parameters	Nph = 67; Dmin = 101.2 km; Rmss = 0.80 seconds; Gp = 31° Version =
Event ID	us 6000rk0z

(1) Nominal Standard Time; local and daylight savings time zone may differ.
For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
National Earthquake Information Center
U.S. Geological Survey


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