M4.9 earthquake 118 km ENE of ‘Ohonua, Tonga
A magnitude 4.9 earthquake struck 118 km ENE of ‘Ohonua, Tonga on Wed, Jun 18, 1986, 8:50 AM GMT+13 (19:50 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 67 km NE of ‘Ohonua, 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
- 1986-06-17 19:50:40 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.898° S, 173.912° 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 1 in the 30 days before it.
After
- 5.267 km NE of ‘Ohonua, Tonga · 14707 days ago · 33 km deep · 55 km away
- 5.584 km S of Pangai, Tonga · 14673 days ago · 37 km deep · 53 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002v51. Read Tue, Sep 22, 2026, 8:25 PM UTC.