M4.7 earthquake 107 km SSW of Hihifo, Tonga
A magnitude 4.7 earthquake struck 107 km SSW of Hihifo, Tonga on Sat, Aug 14, 1982, 6:57 AM GMT-12 (18:57 UTC), 68 km (42 mi) below the surface.
A larger quake followed: M4.9 56 km S of Hihifo, Tonga. This one was a foreshock.
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
- 1982-08-14 18:57:44 UTC
- Depth
- 68.2 km (42.4 mi), shallow
- Epicenter
- 16.835° S, 174.211° 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
- FROM_LOCATION
Nearby
Within 100 km, magnitude 1.7 and up: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001p1x. Read Tue, Sep 22, 2026, 8:40 AM UTC.