2025-07-29 09:33:21 (M4.3) Chile-Argentina border region -23.4 -67.8 (90be5)

M4.3 Earthquake - Chile-Argentina border region

Preliminary Report

Magnitude	4.3
Date-Time	Universal Time (UTC): 29 Jul 2025 09:33:21 Time near the Epicenter (1): 29 Jul 2025 05:33:21 Time in your area (1): 29 Jul 2025 01:33:21
Location	23.448S 67.794W
Depth	160 km
Distances	72.6 km (45.0 mi) SE of San Pedro de Atacama, Chile 159.6 km (99.0 mi) SE of Calama, Chile 251.3 km (155.8 mi) W of Humahuaca, Argentina 266.6 km (165.3 mi) E of Antofagasta, Chile 267.5 km (165.8 mi) WNW of San Salvador de Jujuy, Argentina
Location Uncertainty	Horizontal: 7.2 km; Vertical 5.8 km
Parameters	Nph = 47; Dmin = 67.6 km; Rmss = 1.28 seconds; Gp = 67° Version =
Event ID	us 6000qvwn

(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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