M5.2 earthquake 80 km SW of Hihifo, Tonga
A magnitude 5.2 earthquake struck 80 km SW of Hihifo, Tonga on Fri, Apr 25, 1975, 3:26 AM GMT-12 (15:26 UTC), 29 km (18 mi) below the surface.
A larger quake followed: M5.4 88 km SW 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
- 5.2 (mb), moderate
- Local time
- UTC
- 1975-04-25 15:26:33 UTC
- Depth
- 29.0 km (18.0 mi), shallow
- Epicenter
- 16.529° S, 174.253° 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.
- Stations used
- 18
Nearby
Within 100 km, magnitude 2.2 and up: 3 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 usp0000at7. Read Tue, Sep 22, 2026, 9:45 AM UTC.