2025-10-30 01:08:17 (M4.3) Near the coast of Bio-Bio, Chile -36.9 -73.9 (90be5)

M4.3 Earthquake - Near the coast of Bio-Bio, Chile

Preliminary Report

Magnitude	4.3
Date-Time	Universal Time (UTC): 30 Oct 2025 01:08:18 Time near the Epicenter (1): 29 Oct 2025 21:08:18 Time in your area (1): 29 Oct 2025 17:08:18
Location	36.908S 73.870W
Depth	35 km
Distances	61.9 km (38.3 mi) NW of Arauco, Chile 66.5 km (41.2 mi) WNW of Coronel, Chile 66.5 km (41.3 mi) WNW of Lota, Chile 70.2 km (43.5 mi) WSW of Talcahuano, Chile 73.7 km (45.7 mi) W of Concepción, Chile
Location Uncertainty	Horizontal: 9.0 km; Vertical 2.0 km
Parameters	Nph = 26; Dmin = 254.2 km; Rmss = 0.70 seconds; Gp = 202° Version =
Event ID	us 6000rkay

(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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