M4.7 earthquake 93 km ENE of Hihifo, Tonga
A magnitude 4.7 earthquake struck 93 km ENE of Hihifo, Tonga on Thu, Jul 30, 1981, 10:55 AM GMT-11 (21:55 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M7.7 133 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
- 4.7 (mb), light
- Local time
- UTC
- 1981-07-30 21:55:15 UTC
- Depth
- 35.3 km (21.9 mi), shallow
- Epicenter
- 15.689° S, 172.966° 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
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 18 in the 60 days after this one and 3 in the 30 days before it.
After
- 5.8105 km NNE of Hihifo, Tonga · 16459 days ago · 33 km deep · 70 km away
- 7.7133 km NE of Hihifo, Tonga · 16459 days ago · 25 km deep · 82 km away
- 5.6105 km NNE of Hihifo, Tonga · 16459 days ago · 33 km deep · 68 km away
- 5.2113 km NNE of Hihifo, Tonga · 16459 days ago · 33 km deep · 86 km away
- 4.5126 km ENE of Hihifo, Tonga · 16459 days ago · 33 km deep · 35 km away
- 4.8112 km NNE of Hihifo, Tonga · 16459 days ago · 33 km deep · 80 km away
- 5.1111 km NE of Hihifo, Tonga · 16459 days ago · 33 km deep · 52 km away
- 4.6101 km NNE of Hihifo, Tonga · 16459 days ago · 33 km deep · 71 km away
- 5.788 km NE of Hihifo, Tonga · 16459 days ago · 33 km deep · 55 km away
- 5.6104 km NE of Hihifo, Tonga · 16459 days ago · 33 km deep · 56 km away
- 4.9115 km ENE of Hihifo, Tonga · 16459 days ago · 33 km deep · 32 km away
- 4.4126 km E of Hihifo, Tonga · 16459 days ago · 33 km deep · 37 km away
- 4.8136 km ENE of Hihifo, Tonga · 16459 days ago · 33 km deep · 42 km away
- 4.8127 km NE of Hihifo, Tonga · 16458 days ago · 33 km deep · 67 km away
- 5.5102 km ENE of Hihifo, Tonga · 16458 days ago · 33 km deep · 24 km away
- 4.7116 km NE of Hihifo, Tonga · 16458 days ago · 33 km deep · 43 km away
- 4.8110 km NE of Hihifo, Tonga · 16443 days ago · 33 km deep · 56 km away
- 4.737 km NE of Hihifo, Tonga · 16437 days ago · 123 km deep · 61 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001f1c. Read Thu, Sep 24, 2026, 4:27 PM UTC.