M4.6 earthquake 113 km S of Hihifo, Tonga
A magnitude 4.6 earthquake struck 113 km S of Hihifo, Tonga on Wed, Nov 6, 1985, 3:57 AM GMT-12 (15:57 UTC), 70 km (43 mi) below the surface.
A larger quake followed: M5.4 56 km ESE 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
- 1985-11-06 15:57:03 UTC
- Depth
- 70.0 km (43.5 mi), intermediate-depth
- Epicenter
- 16.969° S, 173.628° 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
Nearby
Within 100 km, magnitude 1.6 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 5.456 km ESE of Hihifo, Tonga · 14930 days ago · 33 km deep · 93 km away
- 6.062 km SW of Hihifo, Tonga · 14907 days ago · 165 km deep · 90 km away
- 5.8113 km SSE of Hihifo, Tonga · 14875 days ago · 16 km deep · 9 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002mgt. Read Tue, Sep 22, 2026, 4:15 PM UTC.