M5.1 earthquake 87 km NNE of Hihifo, Tonga
A magnitude 5.1 earthquake struck 87 km NNE of Hihifo, Tonga on Wed, Jun 24, 1981, 4:08 PM GMT-11 (03:08 UTC), 50 km (31 mi) below the surface.
A larger quake followed: M5.6 81 km NNE 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), moderate
- Local time
- UTC
- 1981-06-25 03:08:48 UTC
- Depth
- 50.0 km (31.1 mi), shallow
- Epicenter
- 15.218° S, 173.503° 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
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001eax. Read Sun, Sep 27, 2026, 4:52 AM UTC.