M4.8 earthquake 226 km ESE of Hihifo, Tonga
A magnitude 4.8 earthquake struck 226 km ESE of Hihifo, Tonga on Sat, Apr 2, 1977, 8:54 AM GMT-11 (19:54 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 221 km SE of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1977-04-02 19:54:30 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.917° S, 171.921° 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
- 24
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.9207 km SE of Hihifo, Tonga · 18080 days ago · 68 km deep · 69 km away
- 4.9209 km NE of Neiafu, Tonga · 18076 days ago · 35 km deep · 81 km away
- 4.7174 km ESE of Hihifo, Tonga · 18074 days ago · 33 km deep · 54 km away
- 5.1194 km SE of Hihifo, Tonga · 18069 days ago · 33 km deep · 94 km away
- 5.1152 km ESE of Hihifo, Tonga · 18062 days ago · 33 km deep · 75 km away
- 5.2221 km SE of Hihifo, Tonga · 18049 days ago · 33 km deep · 34 km away
- 4.4133 km ESE of Hihifo, Tonga · 18047 days ago · 62 km deep · 95 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000n86. Read Sun, Oct 4, 2026, 4:55 PM UTC.