M4.7 earthquake 95 km SE of Pangai, Tonga
A magnitude 4.7 earthquake struck 95 km SE of Pangai, Tonga on Sat, Dec 3, 1983, 3:50 AM GMT+13 (14:50 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 83 km SE of Pangai, 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
- 1983-12-02 14:50:01 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.387° S, 173.669° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.283 km SE of Pangai, Tonga · 15635 days ago · 33 km deep · 25 km away
- 5.4129 km SE of Pangai, Tonga · 15633 days ago · 33 km deep · 40 km away
- 5.3119 km ENE of ‘Ohonua, Tonga · 15609 days ago · 50 km deep · 68 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000207m. Read Tue, Sep 22, 2026, 9:28 PM UTC.