2025-08-22 16:28:42 UPDATED: (M4.3) Mona Passage 18.8 -67.2 (90be5)

M4.3 Earthquake - Mona Passage

Preliminary Report

Magnitude	4.3
Date-Time	Universal Time (UTC): 22 Aug 2025 16:28:43 Time near the Epicenter (1): 22 Aug 2025 12:28:43 Time in your area (1): 22 Aug 2025 08:28:43
Location	18.824N 67.247W
Depth	10 km
Distances	40.0 km (24.8 mi) NNW of San Antonio, Puerto Rico 42.8 km (26.6 mi) NNW of Isabela, Puerto Rico 45.0 km (27.9 mi) NNW of Aguadilla, Puerto Rico 60.4 km (37.5 mi) NNW of San Sebastián, Puerto Rico 68.3 km (42.3 mi) NW of Arecibo, Puerto Rico
Location Uncertainty	Horizontal: 0.6 km; Vertical 0.8 km
Parameters	Nph = 54; Dmin = 42.5 km; Rmss = 0.21 seconds; Gp = 186° Version =
Event ID	pr 2025234001 ***This event supersedes event US6000r36i.

(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
Puerto Rico Seismic Network
University of Puerto Rico
http://redsismica.uprm.edu/

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