M4.6 earthquake 50 km SSE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 50 km SSE of Hihifo, Tonga on Sat, Jun 29, 1985, 12:38 PM GMT-11 (23:38 UTC), 33 km (21 mi) below the surface.
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
- 1985-06-29 23:38:42 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.378° S, 173.614° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 0 in the 60 days after this one and 2 in the 30 days before it.
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002g98. Read Tue, Sep 22, 2026, 10:51 AM UTC.