M4.6 earthquake 128 km E of ‘Ohonua, Tonga
A magnitude 4.6 earthquake struck 128 km E of ‘Ohonua, Tonga on Fri, Aug 1, 2025, 6:57 AM GMT+13 (17:57 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 176 km SE of Pangai, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-07-31 17:57:29 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 21.286° S, 173.716° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 14.2 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- Operator assigned
- Station coverage gap
- 162°
- Stations used
- 28
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.574 km ESE of ‘Ohonua, Tonga · 418 days ago · 10 km deep · 77 km away
- 5.0176 km SE of Pangai, Tonga · 370 days ago · 10 km deep · 71 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000qx0a. Read Sun, Oct 4, 2026, 4:12 PM UTC.