M4.4 earthquake 102 km ENE of ‘Ohonua, Tonga
A magnitude 4.4 earthquake struck 102 km ENE of ‘Ohonua, Tonga on Thu, Sep 6, 1973, 3:43 AM GMT+13 (14:43 UTC), 65 km (40 mi) below the surface.
A larger quake followed: M4.9 70 km NNE of Kolonga, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 1973-09-05 14:43:37 UTC
- Depth
- 65.0 km (40.4 mi), shallow
- Epicenter
- 20.894° S, 174.087° 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
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 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 usp00003ba. Read Wed, Sep 23, 2026, 12:52 AM UTC.