M4.9 earthquake 102 km NE of Hihifo, Tonga
A magnitude 4.9 earthquake struck 102 km NE of Hihifo, Tonga on Sat, Aug 16, 1980, 11:09 PM GMT-11 (10:09 UTC), 61 km (38 mi) below the surface.
A larger quake followed: M6.2 82 km N 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
- 4.9 (mb), light
- Local time
- UTC
- 1980-08-17 10:09:04 UTC
- Depth
- 61.0 km (37.9 mi), shallow
- Epicenter
- 15.204° S, 173.234° 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
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 10 in the 60 days after this one and 1 in the 30 days before it.
After
- 6.282 km N of Hihifo, Tonga · 16838 days ago · 39 km deep · 47 km away
- 5.077 km NNW of Hihifo, Tonga · 16832 days ago · 33 km deep · 83 km away
- 4.884 km NNE of Hihifo, Tonga · 16817 days ago · 33 km deep · 36 km away
- 5.334 km N of Hihifo, Tonga · 16816 days ago · 68 km deep · 73 km away
- 5.678 km NNE of Hihifo, Tonga · 16815 days ago · 33 km deep · 39 km away
- 5.481 km NNE of Hihifo, Tonga · 16815 days ago · 33 km deep · 22 km away
- 4.755 km N of Hihifo, Tonga · 16798 days ago · 107 km deep · 75 km away
- 5.584 km NNW of Hihifo, Tonga · 16793 days ago · 33 km deep · 84 km away
- 6.075 km NNE of Hihifo, Tonga · 16792 days ago · 33 km deep · 28 km away
- 4.679 km N of Hihifo, Tonga · 16790 days ago · 33 km deep · 60 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00019eb. Read Wed, Sep 30, 2026, 7:50 PM UTC.