M4.8 earthquake 142 km SE of Neiafu, Tonga
A magnitude 4.8 earthquake struck 142 km SE of Neiafu, Tonga on Mon, Jul 29, 1985, 5:58 AM GMT+13 (16:58 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
- 4.8 (mb), light
- Local time
- UTC
- 1985-07-28 16:58:18 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 19.482° S, 172.945° 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: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002h5g. Read Tue, Sep 22, 2026, 9:58 AM UTC.