M4.6 earthquake 113 km N of Hihifo, Tonga
A magnitude 4.6 earthquake struck 113 km N of Hihifo, Tonga on Mon, Jun 17, 1985, 11:43 AM GMT-11 (22:43 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 110 km NNW 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
- 1985-06-17 22:43:54 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 14.936° S, 173.638° 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: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.8110 km NNW of Hihifo, Tonga · 15037 days ago · 33 km deep · 69 km away
- 5.387 km N of Hihifo, Tonga · 15034 days ago · 33 km deep · 27 km away
- 5.095 km NNE of Hihifo, Tonga · 15014 days ago · 33 km deep · 31 km away
- 4.475 km NNE of Hihifo, Tonga · 15013 days ago · 33 km deep · 39 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002fxv. Read Tue, Sep 22, 2026, 8:38 AM UTC.