2026-10-28 09:44:00 UPDATED: (M4.1) Puerto Rico region 18.0 -65.3 (90be5)

M4.1 Earthquake - Puerto Rico region

Preliminary Report

Magnitude	4.1
Date-Time	Universal Time (UTC): 28 Oct 2026 09:44:00 Time near the Epicenter (1): 28 Oct 2026 05:44:00 Time in your area (1): 28 Oct 2026 01:44:00
Location	17.955N 65.339W
Depth	25 km
Distances	21.1 km (13.1 mi) SE of Esperanza, Puerto Rico 24.2 km (15.0 mi) SSE of Isabel Segunda, Puerto Rico 52.8 km (32.7 mi) SE of Fajardo, Puerto Rico 56.0 km (34.7 mi) ESE of Humacao, Puerto Rico 60.8 km (37.7 mi) SW of Charlotte Amalie, U.S. Virgin Islands
Location Uncertainty	Horizontal: 0.9 km; Vertical 2.5 km
Parameters	Nph = 42; Dmin = 28.6 km; Rmss = 0.32 seconds; Gp = 157° Version =
Event ID	pr 2026301000 ***This event supersedes event US7000ttn0.

(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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