2025-09-29 17:40:17 (M4.2) Antofagasta, Chile -22.0 -68.8 (90be5)

M4.2 Earthquake - Antofagasta, Chile

Preliminary Report

Magnitude	4.2
Date-Time	Universal Time (UTC): 29 Sep 2025 17:40:18 Time near the Epicenter (1): 29 Sep 2025 13:40:18 Time in your area (1): 29 Sep 2025 09:40:18
Location	22.010S 68.794W
Depth	102 km
Distances	51.2 km (31.8 mi) NNE of Calama, Chile 145.2 km (90.0 mi) E of Tocopilla, Chile 208.5 km (129.3 mi) NE of Mejillones, Chile 235.9 km (146.3 mi) SE of La Tirana, Chile 243.7 km (151.1 mi) SE of Iquique, Chile
Location Uncertainty	Horizontal: 4.8 km; Vertical 4.9 km
Parameters	Nph = 25; Dmin = 51.9 km; Rmss = 0.76 seconds; Gp = 78° Version =
Event ID	us 6000rdma

(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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