M4.7 earthquake 113 km SE of Hihifo, Tonga
A magnitude 4.7 earthquake struck 113 km SE of Hihifo, Tonga on Tue, Oct 27, 1987, 8:20 AM GMT-11 (19:20 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M6.2 138 km S 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
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-10-27 19:20:52 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.760° S, 173.145° 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 1.7 and up: 9 in the 60 days after this one and 1 in the 30 days before it.
After
- 6.2138 km S of Hihifo, Tonga · 14213 days ago · 88 km deep · 82 km away
- 4.6140 km ESE of Hihifo, Tonga · 14204 days ago · 98 km deep · 57 km away
- 5.2166 km NE of Neiafu, Tonga · 14197 days ago · 33 km deep · 96 km away
- 5.9115 km SSW of Hihifo, Tonga · 14192 days ago · 143 km deep · 97 km away
- 4.576 km ESE of Hihifo, Tonga · 14186 days ago · 33 km deep · 57 km away
- 5.488 km ESE of Hihifo, Tonga · 14186 days ago · 33 km deep · 53 km away
- 4.8123 km ESE of Hihifo, Tonga · 14186 days ago · 33 km deep · 39 km away
- 5.5145 km ESE of Hihifo, Tonga · 14179 days ago · 33 km deep · 59 km away
- 5.4163 km SE of Hihifo, Tonga · 14161 days ago · 26 km deep · 62 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00039p0. Read Fri, Oct 2, 2026, 6:26 AM UTC.