M4.8 earthquake 129 km NE of Hihifo, Tonga
A magnitude 4.8 earthquake struck 129 km NE of Hihifo, Tonga on Sat, Apr 25, 1987, 9:44 PM GMT-11 (08:44 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.7 74 km NNE 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
- 1987-04-26 08:44:01 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.050° S, 173.033° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.378 km NNE of Hihifo, Tonga · 14400 days ago · 33 km deep · 53 km away
- 4.790 km N of Hihifo, Tonga · 14393 days ago · 33 km deep · 90 km away
- 5.774 km NNE of Hihifo, Tonga · 14371 days ago · 33 km deep · 64 km away
- 5.097 km N of Hihifo, Tonga · 14358 days ago · 33 km deep · 81 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00034g4. Read Sat, Oct 3, 2026, 9:22 AM UTC.