2026-04-01 08:42:56 (M4.8) western Indian-Antarctic Ridge -47.7 116.0 (90be5)

M4.8 Earthquake - western Indian-Antarctic Ridge

Preliminary Report

Magnitude	4.8
Date-Time	Universal Time (UTC): 1 Apr 2026 08:42:56 Time near the Epicenter (1): 1 Apr 2026 16:42:56 Time in your area (1): 1 Apr 2026 00:42:56
Location	47.736S 115.975E
Depth	10 km
Distances	1415.7 km (877.8 mi) S of Little Grove, Australia 1420.4 km (880.6 mi) S of Albany, Australia 1564.8 km (970.2 mi) S of Busselton, Australia 1600.3 km (992.2 mi) S of Bunbury, Australia 1752.5 km (1086.6 mi) S of Perth, Australia
Location Uncertainty	Horizontal: 11.2 km; Vertical 1.9 km
Parameters	Nph = 33; Dmin = 1648.2 km; Rmss = 0.32 seconds; Gp = 98° Version =
Event ID	us 7000s9br

(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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