M5.3 earthquake 142 km NNE of Neiafu, Tonga
A magnitude 5.3 earthquake struck 142 km NNE of Neiafu, Tonga on Wed, Jun 29, 1977, 8:51 PM GMT-12 (08:51 UTC), 68 km (42 mi) below the surface.
A larger quake followed: M6.3 127 km NNW of Neiafu, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.3 (mb), moderate
- Local time
- UTC
- 1977-06-30 08:51:26 UTC
- Depth
- 68.0 km (42.3 mi), shallow
- Epicenter
- 17.440° S, 173.524° 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 48
Nearby
Within 100 km, magnitude 2.3 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.098 km S of Hihifo, Tonga · 17980 days ago · 50 km deep · 68 km away
- 5.1140 km SSW of Hihifo, Tonga · 17974 days ago · 153 km deep · 98 km away
- 4.8128 km SSE of Hihifo, Tonga · 17954 days ago · 46 km deep · 43 km away
- 6.3127 km NNW of Neiafu, Tonga · 17939 days ago · 57 km deep · 91 km away
- 4.5120 km SSE of Hihifo, Tonga · 17938 days ago · 33 km deep · 50 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000pjb. Read Tue, Sep 22, 2026, 12:13 PM UTC.