M5.1 earthquake 70 km NE of Hihifo, Tonga
A magnitude 5.1 earthquake struck 70 km NE of Hihifo, Tonga on Tue, Jun 21, 1983, 12:36 AM GMT-11 (11:36 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 115 km ENE 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
- 5.1 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1983-06-21 11:36:57 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.433° S, 173.415° 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 2.1 and up: 2 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.345 km NNW of Hihifo, Tonga · 15804 days ago · 196 km deep · 53 km away
- 5.2115 km ENE of Hihifo, Tonga · 15802 days ago · 33 km deep · 57 km away
Before
- 4.863 km ENE of Hihifo, Tonga · 15812 days ago · 33 km deep · 26 km away
- 5.581 km NNE of Hihifo, Tonga · 15816 days ago · 33 km deep · 32 km away
- 4.464 km NW of Hihifo, Tonga · 15816 days ago · 33 km deep · 90 km away
- 5.3100 km E of Hihifo, Tonga · 15826 days ago · 33 km deep · 80 km away
- 5.195 km E of Hihifo, Tonga · 15826 days ago · 33 km deep · 87 km away
- 6.1109 km ENE of Hihifo, Tonga · 15830 days ago · 33 km deep · 71 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001w8k. Read Sat, Oct 3, 2026, 9:20 AM UTC.