M5.3 earthquake 175 km SSE of Hihifo, Tonga
A magnitude 5.3 earthquake struck 175 km SSE of Hihifo, Tonga on Fri, Apr 29, 1977, 12:00 PM GMT-12 (00:00 UTC), 33 km (21 mi) below the surface.
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
- 1977-04-30 00:00:14 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 17.339° S, 173.001° 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
- OPERATOR_ASSIGNED
- Stations used
- 12
Nearby
Within 100 km, magnitude 2.3 and up: 3 in the 60 days after this one and 8 in the 30 days before it.
After
- 5.2221 km SE of Hihifo, Tonga · 18044 days ago · 33 km deep · 95 km away
- 5.0164 km ENE of Neiafu, Tonga · 18043 days ago · 33 km deep · 84 km away
- 4.5108 km S of Hihifo, Tonga · 17990 days ago · 37 km deep · 82 km away
Before
- 4.7126 km ESE of Hihifo, Tonga · 18056 days ago · 33 km deep · 89 km away
- 5.1194 km SE of Hihifo, Tonga · 18064 days ago · 33 km deep · 34 km away
- 4.3150 km SSE of Hihifo, Tonga · 18067 days ago · 33 km deep · 26 km away
- 4.9176 km NE of Neiafu, Tonga · 18067 days ago · 33 km deep · 57 km away
- 4.9209 km NE of Neiafu, Tonga · 18071 days ago · 35 km deep · 58 km away
- 4.9173 km NE of Neiafu, Tonga · 18073 days ago · 33 km deep · 20 km away
- 5.1178 km NE of Neiafu, Tonga · 18073 days ago · 33 km deep · 55 km away
- 4.9207 km SE of Hihifo, Tonga · 18076 days ago · 68 km deep · 60 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000npf. Read Wed, Sep 30, 2026, 7:35 AM UTC.