M5.1 earthquake 112 km NNW of Hihifo, Tonga
A magnitude 5.1 earthquake struck 112 km NNW of Hihifo, Tonga on Fri, Aug 8, 1975, 11:21 AM GMT-11 (22:21 UTC), 74 km (46 mi) below the surface.
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
- 1975-08-08 22:21:01 UTC
- Depth
- 74.0 km (46.0 mi), intermediate-depth
- Epicenter
- 15.011° S, 174.185° 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
- 33
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000cda. Read Mon, Sep 28, 2026, 11:40 PM UTC.