2026-02-28 16:22:26 (M4.3) Chile-Argentina border region -24.1 -67.2 (90be5)

M4.3 Earthquake - Chile-Argentina border region

Preliminary Report

Magnitude	4.3
Date-Time	Universal Time (UTC): 28 Feb 2026 16:22:26 Time near the Epicenter (1): 28 Feb 2026 13:22:26 Time in your area (1): 28 Feb 2026 08:22:26
Location	24.088S 67.162W
Depth	219 km
Distances	86.9 km (53.9 mi) W of San Antonio de los Cobres, Argentina 189.9 km (117.7 mi) W of San Salvador de Jujuy, Argentina 193.5 km (120.0 mi) WNW of Salta, Argentina 199.0 km (123.4 mi) W of Palpalá, Argentina 209.1 km (129.6 mi) WSW of Humahuaca, Argentina
Location Uncertainty	Horizontal: 10.2 km; Vertical 12.8 km
Parameters	Nph = 28; Dmin = 163.1 km; Rmss = 0.71 seconds; Gp = 77° Version =
Event ID	us 7000s12u

(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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