M4.7 earthquake 165 km W of Pangai, Tonga
A magnitude 4.7 earthquake struck 165 km W of Pangai, Tonga on Fri, Apr 4, 1986, 12:10 AM GMT+13 (11:10 UTC), 270 km (168 mi) below the surface.
A larger quake followed: M4.9 99 km NW of Nuku‘alofa, 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
- 1986-04-03 11:10:10 UTC
- Depth
- 270.3 km (168.0 mi), intermediate-depth
- Epicenter
- 19.803° S, 175.936° 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
- FROM_LOCATION
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 1 in the 30 days before it.
After
- 4.999 km NW of Nuku‘alofa, Tonga · 14771 days ago · 211 km deep · 83 km away
- 4.9124 km WNW of Pangai, Tonga · 14731 days ago · 33 km deep · 83 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002sm8. Read Tue, Sep 22, 2026, 4:15 PM UTC.