M4.8 earthquake 74 km E of Hihifo, Tonga
A magnitude 4.8 earthquake struck 74 km E of Hihifo, Tonga on Mon, Jul 29, 1974, 11:27 PM GMT-11 (10:27 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 80 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
- 4.8 (mb), light
- Local time
- UTC
- 1974-07-30 10:27:26 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.937° S, 173.100° 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
- 12
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.3106 km E of Hihifo, Tonga · 19042 days ago · 42 km deep · 37 km away
- 4.571 km E of Hihifo, Tonga · 19038 days ago · 33 km deep · 3 km away
- 5.080 km NNE of Hihifo, Tonga · 19034 days ago · 13 km deep · 73 km away
- 4.762 km NE of Hihifo, Tonga · 19015 days ago · 124 km deep · 43 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00007d7. Read Mon, Sep 28, 2026, 5:32 PM UTC.