M4.4 earthquake 75 km NNE of Hihifo, Tonga
A magnitude 4.4 earthquake struck 75 km NNE of Hihifo, Tonga on Thu, Aug 15, 1985, 4:53 AM GMT-11 (15:53 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.8 68 km NNE 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
- 4.4 (mb), light
- Local time
- UTC
- 1985-08-15 15:53:37 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.288° S, 173.625° 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 1.5 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 5.868 km NNE of Hihifo, Tonga · 14990 days ago · 68 km deep · 15 km away
- 4.982 km NNW of Hihifo, Tonga · 14986 days ago · 139 km deep · 57 km away
- 4.859 km E of Hihifo, Tonga · 14976 days ago · 33 km deep · 85 km away
- 4.588 km NNE of Hihifo, Tonga · 14975 days ago · 33 km deep · 14 km away
- 4.767 km ENE of Hihifo, Tonga · 14973 days ago · 33 km deep · 61 km away
- 4.894 km N of Hihifo, Tonga · 14966 days ago · 33 km deep · 20 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002hsj. Read Sat, Sep 26, 2026, 7:14 PM UTC.