M4.7 earthquake 229 km SW of Vaini, Tonga
A magnitude 4.7 earthquake struck 229 km SW of Vaini, Tonga on Mon, Apr 6, 1981, 8:24 PM GMT+13 (07:24 UTC), 220 km (136 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1981-04-06 07:24:59 UTC
- Depth
- 219.5 km (136.4 mi), intermediate-depth
- Epicenter
- 22.563° S, 176.837° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 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 usp0001d1a. Read Thu, Sep 24, 2026, 9:19 AM UTC.