M4.6 earthquake 162 km W of Hihifo, Tonga
A magnitude 4.6 earthquake struck 162 km W of Hihifo, Tonga on Thu, Feb 24, 1983, 1:19 PM GMT-12 (01:19 UTC), 410 km (255 mi) below the surface.
A larger quake followed: M4.8 Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1983-02-25 01:19:54 UTC
- Depth
- 410.3 km (254.9 mi), deep
- Epicenter
- 16.213° S, 175.294° 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 1.6 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001tac. Read Thu, Oct 1, 2026, 3:21 PM UTC.