2025-09-03 20:48:30 (M3.9) Puerto Rico region 19.7 -66.9 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M3.9 Earthquake - Puerto Rico region

Preliminary Report

Magnitude	3.9
Date-Time	Universal Time (UTC): 3 Sep 2025 20:48:30 Time near the Epicenter (1): 3 Sep 2025 16:48:30 Time in your area (1): 3 Sep 2025 12:48:30
Location	19.746N 66.903W
Depth	40 km
Distances	138.5 km (85.8 mi) N of Isabela, Puerto Rico 142.4 km (88.3 mi) N of Arecibo, Puerto Rico 148.4 km (92.0 mi) N of Aguadilla, Puerto Rico 148.5 km (92.0 mi) NNW of Barceloneta, Puerto Rico 152.2 km (94.4 mi) NNW of Manatí, Puerto Rico
Location Uncertainty	Horizontal: 1.9 km; Vertical 15.3 km
Parameters	Nph = 52; Dmin = 144.1 km; Rmss = 0.39 seconds; Gp = 216° Version =
Event ID	pr 2025246004

(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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