2026-08-12 18:28:30 (M4.2) Peru-Bolivia border region -17.3 -69.8 (90be5)

M4.2 Earthquake - Peru-Bolivia border region

Preliminary Report

Magnitude	4.2
Date-Time	Universal Time (UTC): 12 Aug 2026 18:28:31 Time near the Epicenter (1): 12 Aug 2026 14:28:31 Time in your area (1): 12 Aug 2026 10:28:31
Location	17.328S 69.786W
Depth	158 km
Distances	27.7 km (17.2 mi) E of Chuquitira, Peru 90.8 km (56.3 mi) NNE of Tacna, Peru 121.8 km (75.5 mi) E of San Antonio, Peru 123.1 km (76.3 mi) E of Moquegua, Peru 138.0 km (85.6 mi) NNE of Arica, Chile
Location Uncertainty	Horizontal: 3.0 km; Vertical 5.3 km
Parameters	Nph = 31; Dmin = 43.5 km; Rmss = 0.71 seconds; Gp = 120° Version =
Event ID	us 6000tk9l

(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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