M4.7 earthquake 206 km NE of Neiafu, Tonga
A magnitude 4.7 earthquake struck 206 km NE of Neiafu, Tonga on Mon, Oct 5, 1987, 5:37 PM GMT-12 (05:37 UTC), 38 km (24 mi) below the surface.
A larger quake followed: M5.5 150 km NE of Neiafu, 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
- 1987-10-06 05:37:00 UTC
- Depth
- 38.1 km (23.7 mi), shallow
- Epicenter
- 17.423° S, 172.517° 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
- CONSTRAINED_BY_DEPTH_PHASES
Nearby
Within 100 km, magnitude 1.7 and up: 10 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.7195 km ENE of Neiafu, Tonga · 14244 days ago · 33 km deep · 71 km away
- 4.9182 km ENE of Neiafu, Tonga · 14244 days ago · 33 km deep · 37 km away
- 5.0137 km NE of Neiafu, Tonga · 14244 days ago · 33 km deep · 69 km away
- 5.1180 km ENE of Neiafu, Tonga · 14244 days ago · 33 km deep · 52 km away
- 5.3243 km ENE of Neiafu, Tonga · 14242 days ago · 33 km deep · 49 km away
- 4.9202 km NE of Neiafu, Tonga · 14234 days ago · 33 km deep · 18 km away
- 4.7113 km SE of Hihifo, Tonga · 14222 days ago · 33 km deep · 99 km away
- 4.6140 km ESE of Hihifo, Tonga · 14207 days ago · 98 km deep · 96 km away
- 5.2166 km NE of Neiafu, Tonga · 14200 days ago · 33 km deep · 42 km away
- 5.5150 km NE of Neiafu, Tonga · 14188 days ago · 29 km deep · 56 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000390p. Read Mon, Oct 5, 2026, 6:19 AM UTC.