2025-09-27 16:01:05 (M3.4) Mona Passage 18.9 -67.3 (90be5)

M3.4 Earthquake - Mona Passage

Preliminary Report

Magnitude	3.4
Date-Time	Universal Time (UTC): 27 Sep 2025 16:01:05 Time near the Epicenter (1): 27 Sep 2025 12:01:05 Time in your area (1): 27 Sep 2025 08:01:05
Location	18.933N 67.338W
Depth	6 km
Distances	55.0 km (34.1 mi) NNW of San Antonio, Puerto Rico 58.2 km (36.1 mi) NW of Isabela, Puerto Rico 59.3 km (36.7 mi) NNW of Aguadilla, Puerto Rico 75.6 km (46.9 mi) NNW of San Sebastián, Puerto Rico 83.1 km (51.5 mi) NW of Arecibo, Puerto Rico
Location Uncertainty	Horizontal: 0.6 km; Vertical 0.7 km
Parameters	Nph = 54; Dmin = 56.8 km; Rmss = 0.31 seconds; Gp = 176° Version = 1
Event ID	pr 71496623

(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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