2025-08-23 06:17:16 UPDATED: (M3.4) Mona Passage 18.8 -67.3 (90be5)

M3.4 Earthquake - Mona Passage

Preliminary Report

Magnitude	3.4
Date-Time	Universal Time (UTC): 23 Aug 2025 06:17:17 Time near the Epicenter (1): 23 Aug 2025 02:17:17 Time in your area (1): 22 Aug 2025 22:17:17
Location	18.806N 67.269W
Depth	17 km
Distances	39.1 km (24.2 mi) NNW of San Antonio, Puerto Rico 42.5 km (26.3 mi) NW of Isabela, Puerto Rico 43.6 km (27.0 mi) NNW of Aguadilla, Puerto Rico 59.7 km (37.0 mi) NNW of San Sebastián, Puerto Rico 68.3 km (42.3 mi) NNW of Mayagüez, Puerto Rico
Location Uncertainty	Horizontal: 0.6 km; Vertical 0.7 km
Parameters	Nph = 53; Dmin = 36.7 km; Rmss = 0.24 seconds; Gp = 188° Version = 1
Event ID	pr 71493373 ***This event supersedes event US6000r3a6.

(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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