M5.4 earthquake 29 km SW of Vaini, Tonga
A magnitude 5.4 earthquake struck 29 km SW of Vaini, Tonga on Fri, Sep 16, 1983, 8:43 PM GMT+13 (07:43 UTC), 47 km (29 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.4 (mb), moderate
- Local time
- UTC
- 1983-09-16 07:43:31 UTC
- Depth
- 46.7 km (29.0 mi), shallow
- Epicenter
- 21.397° S, 175.360° 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
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.4 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ydr. Read Tue, Sep 22, 2026, 9:29 PM UTC.