M4.5 earthquake 163 km NE of Neiafu, Tonga
A magnitude 4.5 earthquake struck 163 km NE of Neiafu, Tonga on Mon, Aug 15, 1983, 12:09 PM GMT-12 (00:09 UTC), 60 km (37 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1983-08-16 00:09:36 UTC
- Depth
- 60.0 km (37.3 mi), shallow
- Epicenter
- 17.586° S, 172.918° 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 1.5 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 usp0001xq2. Read Tue, Sep 22, 2026, 8:47 PM UTC.