M5.0 earthquake 80 km NNE of Hihifo, Tonga
A magnitude 5.0 earthquake struck 80 km NNE of Hihifo, Tonga on Sun, Aug 18, 1974, 6:14 PM GMT-11 (05:14 UTC), 13 km (8 mi) below the surface.
A larger quake followed: M5.2 136 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
- 5.0 (mb), moderate
- Local time
- UTC
- 1974-08-19 05:14:14 UTC
- Depth
- 13.0 km (8.1 mi), shallow
- Epicenter
- 15.342° S, 173.391° 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
- 38
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.1111 km NNW of Hihifo, Tonga · 19025 days ago · 58 km deep · 97 km away
- 4.762 km NE of Hihifo, Tonga · 19017 days ago · 124 km deep · 31 km away
- 5.2136 km NE of Hihifo, Tonga · 19012 days ago · 33 km deep · 58 km away
- 4.797 km NNE of Hihifo, Tonga · 19004 days ago · 33 km deep · 28 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00007pd. Read Thu, Oct 1, 2026, 1:59 AM UTC.