M5.1 earthquake 61 km S of Hihifo, Tonga
A magnitude 5.1 earthquake struck 61 km S of Hihifo, Tonga on Sun, Jan 28, 1973, 3:18 AM GMT-11 (14:18 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1973-01-28 14:18:03 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.512° S, 173.764° 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
- Stations used
- 46
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 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 usp00000ak. Read Tue, Sep 22, 2026, 7:12 AM UTC.