2025-07-31 01:33:28 (M4.9) Tonga region -22.0 -175.4 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.9 Earthquake - Tonga region

Preliminary Report

Magnitude	4.9
Date-Time	Universal Time (UTC): 31 Jul 2025 01:33:28 Time near the Epicenter (1): 31 Jul 2025 14:33:28 Time in your area (1): 30 Jul 2025 17:33:28
Location	22.001S 175.392W
Depth	35 km
Distances	85.9 km (53.2 mi) SSW of ‘Ohonua, Tonga 97.7 km (60.6 mi) SSW of Nuku‘alofa, Tonga 771.8 km (478.5 mi) ESE of Nasinu, Fiji 775.2 km (480.6 mi) ESE of Suva, Fiji 826.8 km (512.6 mi) SE of Labasa, Fiji
Location Uncertainty	Horizontal: 10.6 km; Vertical 1.9 km
Parameters	Nph = 46; Dmin = 655.0 km; Rmss = 1.02 seconds; Gp = 90° Version =
Event ID	us 6000qwst

(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


Disclaimer

This email was sent to list-quake@xxxxxxxxxxx

You requested mail for events between -90.0/90.0 latitude and 180.0/-180.0 longitude (Default World)
for M3.5 between 08:00 and 20:00 and M4.0 other times.

To change your parameters, go to: https://earthquake.usgs.gov/ens/
To unsubscribe, send a one-line reply to this message with: STOP list-quake@xxxxxxxxxxx