M4.6 earthquake 236 km W of Haveluloto, Tonga
A magnitude 4.6 earthquake struck 236 km W of Haveluloto, Tonga on Thu, Jan 18, 1973, 4:43 PM GMT+13 (03:43 UTC), 583 km (362 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1973-01-18 03:43:40 UTC
- Depth
- 583.0 km (362.3 mi), deep
- Epicenter
- 21.226° S, 177.491° 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.
- Stations used
- 22
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 2 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 usp000006e. Read Tue, Sep 22, 2026, 11:00 AM UTC.