M4.8 earthquake 188 km S of ‘Ohonua, Tonga
A magnitude 4.8 earthquake struck 188 km S of ‘Ohonua, Tonga on Wed, Apr 13, 1983, 3:48 AM GMT+13 (14:48 UTC), 67 km (41 mi) below the surface.
A larger quake followed: M4.9 239 km SSW 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), light
- Local time
- UTC
- 1983-04-12 14:48:48 UTC
- Depth
- 66.6 km (41.4 mi), shallow
- Epicenter
- 23.035° S, 174.985° 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
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 2 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 usp0001ucx. Read Tue, Sep 22, 2026, 9:28 PM UTC.