M6.4 earthquake Tonga
A magnitude 6.4 earthquake struck in Tonga on Sat, Jan 8, 1983, 12:21 AM GMT-11 (11:21 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
- 6.4 (mw), strong
- Local time
- UTC
- 1983-01-08 11:21:29 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.394° S, 173.330° 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 2.5 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.980 km NNE of Hihifo, Tonga · 15959 days ago · 33 km deep · 12 km away
- 4.7135 km ENE of Hihifo, Tonga · 15952 days ago · 33 km deep · 70 km away
- 5.361 km N of Hihifo, Tonga · 15947 days ago · 33 km deep · 50 km away
- 5.465 km NNE of Hihifo, Tonga · 15945 days ago · 41 km deep · 17 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001s30 (also filed as gcmtb010883a, gcmt19830108112129, iscgem584289). Read Tue, Sep 22, 2026, 12:22 PM UTC.