M4.7 earthquake 120 km W of Pangai, Tonga
A magnitude 4.7 earthquake struck 120 km W of Pangai, Tonga on Tue, Jun 6, 1978, 11:52 PM GMT+13 (10:52 UTC), 267 km (166 mi) below the surface.
A larger quake followed: M5.1 57 km NW of Nuku‘alofa, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1978-06-06 10:52:59 UTC
- Depth
- 267.0 km (165.9 mi), intermediate-depth
- Epicenter
- 20.022° S, 175.488° 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
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 1 in the 60 days after this one and 1 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 usp0000uxf. Read Sun, Sep 27, 2026, 1:51 PM UTC.