M4.8 earthquake 100 km NNE of Hihifo, Tonga
A magnitude 4.8 earthquake struck 100 km NNE of Hihifo, Tonga on Fri, Dec 6, 1974, 6:29 PM GMT-11 (05:29 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 94 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
- 1974-12-07 05:29:46 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.101° S, 173.480° 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
- Stations used
- 17
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 1 in the 60 days after this one and 3 in the 30 days before it.
After
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000913. Read Tue, Sep 22, 2026, 8:20 AM UTC.