M4.7 earthquake 13 km NNW of Pangai, Tonga
A magnitude 4.7 earthquake struck 13 km NNW of Pangai, Tonga on Tue, Mar 18, 1986, 10:17 PM GMT+13 (09:17 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 88 km ENE of Pangai, 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), light
- Local time
- UTC
- 1986-03-18 09:17:37 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 19.697° S, 174.400° 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: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002ry8. Read Tue, Sep 22, 2026, 3:16 AM UTC.