M4.8 earthquake 63 km ENE of Hihifo, Tonga
A magnitude 4.8 earthquake struck 63 km ENE of Hihifo, Tonga on Sat, Jun 18, 1983, 12:02 PM GMT-11 (23:02 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 70 km NE of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1983-06-18 23:02:17 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.639° S, 173.297° 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: 3 in the 60 days after this one and 6 in the 30 days before it.
After
- 5.170 km NE of Hihifo, Tonga · 15799 days ago · 33 km deep · 26 km away
- 4.345 km NNW of Hihifo, Tonga · 15794 days ago · 196 km deep · 64 km away
- 5.2115 km ENE of Hihifo, Tonga · 15792 days ago · 33 km deep · 52 km away
Before
- 5.581 km NNE of Hihifo, Tonga · 15806 days ago · 33 km deep · 58 km away
- 5.3100 km E of Hihifo, Tonga · 15815 days ago · 33 km deep · 56 km away
- 5.3115 km ESE of Hihifo, Tonga · 15815 days ago · 33 km deep · 95 km away
- 5.195 km E of Hihifo, Tonga · 15815 days ago · 33 km deep · 62 km away
- 4.6149 km ENE of Hihifo, Tonga · 15819 days ago · 33 km deep · 90 km away
- 6.1109 km ENE of Hihifo, Tonga · 15819 days ago · 33 km deep · 52 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001w6c. Read Tue, Sep 22, 2026, 10:23 PM UTC.