2025-08-01 04:13:56 (M4.2) Chile-Bolivia border region -21.8 -68.8 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.2 Earthquake - Chile-Bolivia border region

Preliminary Report

Magnitude	4.2
Date-Time	Universal Time (UTC): 1 Aug 2025 04:13:57 Time near the Epicenter (1): 1 Aug 2025 00:13:57 Time in your area (1): 31 Jul 2025 20:13:57
Location	21.846S 68.801W
Depth	129 km
Distances	68.8 km (42.6 mi) N of Calama, Chile 146.9 km (91.0 mi) E of Tocopilla, Chile 219.1 km (135.8 mi) NE of Mejillones, Chile 221.1 km (137.1 mi) SE of Alto Hospicio, Chile 228.8 km (141.9 mi) SE of Iquique, Chile
Location Uncertainty	Horizontal: 6.3 km; Vertical 5.7 km
Parameters	Nph = 24; Dmin = 45.9 km; Rmss = 1.21 seconds; Gp = 56° Version =
Event ID	us 6000qx78

(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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