2019-07-31 10:02:56 (M4.9) Tonga -15.9 -174.0 (90be5)

M4.9 Earthquake - Tonga

Preliminary Report

Magnitude	4.9
Date-Time	31 Jul 2019 10:02:57 UTC 31 Jul 2019 23:02:57 near epicenter 31 Jul 2019 02:02:57 standard time in your timezone
Location	15.923S 173.961W
Depth	57 km
Distances	18.0 km (11.2 mi) W of Hihifo, Tonga 330.5 km (204.9 mi) SW of Apia, Samoa 390.1 km (241.9 mi) WSW of T?funa, American Samoa 394.7 km (244.7 mi) WSW of Pago Pago, American Samoa 592.1 km (367.1 mi) NNE of Nuku�alofa, Tonga
Location Uncertainty	Horizontal: 12.5 km; Vertical 10.8 km
Parameters	Nph = 29; Dmin = 323.5 km; Rmss = 0.68 seconds; Gp = 91° Version =
Event ID	us 60004xwb

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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