2025-09-30 20:31:05 (M4.2) Chile-Bolivia border region -21.3 -69.0 (90be5)

M4.2 Earthquake - Chile-Bolivia border region

Preliminary Report

Magnitude	4.2
Date-Time	Universal Time (UTC): 30 Sep 2025 20:31:06 Time near the Epicenter (1): 30 Sep 2025 16:31:06 Time in your area (1): 30 Sep 2025 12:31:06
Location	21.312S 68.959W
Depth	102 km
Distances	73.8 km (45.8 mi) W of Ollagüe, Chile 126.8 km (78.6 mi) N of Calama, Chile 154.6 km (95.8 mi) NE of Tocopilla, Chile 166.1 km (103.0 mi) SE of Alto Hospicio, Chile 173.7 km (107.7 mi) SE of Iquique, Chile
Location Uncertainty	Horizontal: 4.2 km; Vertical 3.8 km
Parameters	Nph = 74; Dmin = 61.1 km; Rmss = 0.97 seconds; Gp = 49° Version =
Event ID	us 6000rdws

(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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