M4.6 earthquake 244 km W of Hihifo, Tonga
A magnitude 4.6 earthquake struck 244 km W of Hihifo, Tonga on Sun, Oct 30, 1977, 9:42 AM GMT-12 (21:42 UTC), 356 km (221 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
- 1977-10-30 21:42:24 UTC
- Depth
- 356.0 km (221.2 mi), deep
- Epicenter
- 16.337° S, 176.050° 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
- 33
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 usp0000rab. Read Tue, Sep 29, 2026, 11:57 PM UTC.