M6.3 earthquake 101 km NNE of Hihifo, Tonga
A magnitude 6.3 earthquake struck 101 km NNE of Hihifo, Tonga on Wed, Dec 31, 1947, 3:36 AM GMT-11:30 (15:06 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.3 (mw), strong
- Local time
- UTC
- 1947-12-31 15:06:32 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 15.121° S, 173.403° 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.
- Magnitude uncertainty
- ±0.30
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 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 iscgem898205. Read Tue, Sep 22, 2026, 3:15 PM UTC.