M4.6 earthquake 42 km SSW of Hihifo, Tonga
A magnitude 4.6 earthquake struck 42 km SSW of Hihifo, Tonga on Wed, Dec 10, 1975, 2:26 AM GMT-11 (13:26 UTC), 59 km (37 mi) below the surface.
A larger quake followed: M4.8 32 km SW of Hihifo, 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), light
- Local time
- UTC
- 1975-12-10 13:26:24 UTC
- Depth
- 59.0 km (36.7 mi), shallow
- Epicenter
- 16.295° S, 173.984° 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.
- Stations used
- 20
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000dvn. Read Tue, Sep 22, 2026, 11:14 AM UTC.