M4.8 earthquake 103 km ESE of ‘Ohonua, Tonga
A magnitude 4.8 earthquake struck 103 km ESE of ‘Ohonua, Tonga on Wed, Dec 5, 1984, 11:23 PM GMT+13 (10:23 UTC), 60 km (37 mi) below the surface.
A larger quake followed: M5.6 92 km ESE of ‘Ohonua, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-12-05 10:23:31 UTC
- Depth
- 60.0 km (37.3 mi), shallow
- Epicenter
- 21.838° S, 174.108° 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 1.8 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 usp00029t6. Read Sun, Oct 4, 2026, 6:17 AM UTC.