2025-10-24 22:38:53 (M4.9) south of the Mariana Islands 11.8 143.3 (90be5)

M4.9 Earthquake - south of the Mariana Islands

Preliminary Report

Magnitude	4.9
Date-Time	Universal Time (UTC): 24 Oct 2025 22:38:53 Time near the Epicenter (1): 25 Oct 2025 09:38:53 Time in your area (1): 24 Oct 2025 14:38:53
Location	11.814N 143.321E
Depth	10 km
Distances	217.4 km (134.8 mi) SW of Merizo Village, Guam 241.9 km (150.0 mi) SW of Mangilao Village, Guam 243.8 km (151.2 mi) SW of Tamuning, Guam 243.9 km (151.2 mi) SW of Tamuning-Tumon-Harmon Village, Guam 250.5 km (155.3 mi) SW of Dededo Village, Guam
Location Uncertainty	Horizontal: 7.5 km; Vertical 1.9 km
Parameters	Nph = 79; Dmin = 258.2 km; Rmss = 0.93 seconds; Gp = 60° Version =
Event ID	us 6000rjbf

(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
National Earthquake Information Center
U.S. Geological Survey


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