M5.0 earthquake 117 km SSW of Hihifo, Tonga
A magnitude 5.0 earthquake struck 117 km SSW of Hihifo, Tonga on Fri, Apr 29, 1977, 2:05 PM GMT-12 (02:05 UTC), 42 km (26 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb), moderate
- Local time
- UTC
- 1977-04-30 02:05:45 UTC
- Depth
- 42.0 km (26.1 mi), shallow
- Epicenter
- 16.981° S, 174.059° 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
- 45
Nearby
Within 100 km, magnitude 2.0 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 usp0000nph. Read Tue, Sep 22, 2026, 6:30 AM UTC.