M4.9 earthquake 177 km NE of Neiafu, Tonga
A magnitude 4.9 earthquake struck 177 km NE of Neiafu, Tonga on Tue, Jul 7, 1987, 11:15 AM GMT-12 (23:15 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1987-07-07 23:15:24 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 17.672° S, 172.660° 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
Nearby
Within 100 km, magnitude 1.9 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.2184 km SE of Hihifo, Tonga · 14279 days ago · 33 km deep · 77 km away
- 4.6114 km ENE of Neiafu, Tonga · 14275 days ago · 33 km deep · 90 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00036f2. Read Mon, Sep 28, 2026, 3:44 PM UTC.