M4.8 earthquake 65 km E of Hihifo, Tonga
A magnitude 4.8 earthquake struck 65 km E of Hihifo, Tonga on Sun, Oct 4, 1987, 5:28 PM GMT-11 (04:28 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 68 km ENE 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
- 1987-10-05 04:28:12 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.850° S, 173.195° 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: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.880 km NNE of Hihifo, Tonga · 14220 days ago · 33 km deep · 67 km away
- 4.788 km NNE of Hihifo, Tonga · 14220 days ago · 33 km deep · 82 km away
- 5.468 km ENE of Hihifo, Tonga · 14220 days ago · 33 km deep · 28 km away
- 4.6140 km ESE of Hihifo, Tonga · 14207 days ago · 98 km deep · 99 km away
- 4.576 km ESE of Hihifo, Tonga · 14189 days ago · 33 km deep · 44 km away
- 5.488 km ESE of Hihifo, Tonga · 14189 days ago · 33 km deep · 52 km away
- 4.8123 km ESE of Hihifo, Tonga · 14189 days ago · 33 km deep · 89 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00038zn. Read Mon, Oct 5, 2026, 2:47 AM UTC.