M4.9 earthquake 115 km NNW of Neiafu, Tonga
A magnitude 4.9 earthquake struck 115 km NNW of Neiafu, Tonga on Sat, Jun 28, 1986, 1:14 AM GMT+13 (12:14 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 114 km NW 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
- 4.9 (mb), light
- Local time
- UTC
- 1986-06-27 12:14:03 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 17.747° S, 174.536° 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 1.9 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.8143 km SW of Hihifo, Tonga · 14676 days ago · 145 km deep · 90 km away
- 5.2114 km NW of Neiafu, Tonga · 14664 days ago · 174 km deep · 48 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002vfc. Read Tue, Sep 22, 2026, 5:59 AM UTC.