M4.7 earthquake 117 km S of ‘Ohonua, Tonga
A magnitude 4.7 earthquake struck 117 km S of ‘Ohonua, Tonga on Thu, Jun 29, 1978, 12:42 AM GMT+13 (11:42 UTC), 60 km (37 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1978-06-28 11:42:08 UTC
- Depth
- 60.0 km (37.3 mi), shallow
- Epicenter
- 22.389° S, 174.872° 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
- 25
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 0 in the 60 days after this one and 2 in the 30 days before it.
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000vbp. Read Mon, Sep 28, 2026, 7:37 PM UTC.