M4.3 earthquake 106 km E of Hihifo, Tonga
A magnitude 4.3 earthquake struck 106 km E of Hihifo, Tonga on Sat, Aug 10, 1974, 7:54 AM GMT-11 (18:54 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M4.7 62 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
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1974-08-10 18:54:09 UTC
- Depth
- 42.0 km (26.1 mi), shallow
- Epicenter
- 16.136° S, 172.821° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.571 km E of Hihifo, Tonga · 19040 days ago · 33 km deep · 40 km away
- 4.762 km NE of Hihifo, Tonga · 19017 days ago · 124 km deep · 79 km away
- 3.7168 km SSW of Lotofag?, Samoa · 19008 days ago · 58 km deep · 97 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00007hx. Read Thu, Oct 1, 2026, 7:17 AM UTC.