2025-10-30 01:04:46 (M4.4) Off the coast of Bio-Bio, Chile -36.9 -74.4 (90be5)

M4.4 Earthquake - Off the coast of Bio-Bio, Chile

Preliminary Report

Magnitude	4.4
Date-Time	Universal Time (UTC): 30 Oct 2025 01:04:46 Time near the Epicenter (1): 29 Oct 2025 21:04:46 Time in your area (1): 29 Oct 2025 17:04:46
Location	36.855S 74.420W
Depth	10 km
Distances	107.2 km (66.5 mi) WNW of Arauco, Chile 107.7 km (66.8 mi) NW of Lebu, Chile 115.4 km (71.5 mi) WNW of Lota, Chile 115.7 km (71.7 mi) W of Coronel, Chile 122.2 km (75.8 mi) W of Concepción, Chile
Location Uncertainty	Horizontal: 7.4 km; Vertical 2.0 km
Parameters	Nph = 20; Dmin = 295.6 km; Rmss = 0.41 seconds; Gp = 211° Version =
Event ID	us 6000rkaw

(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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