M4.8 earthquake 116 km SSE of Pangai, Tonga
A magnitude 4.8 earthquake struck 116 km SSE of Pangai, Tonga on Wed, Apr 7, 1976, 1:38 PM GMT+13 (00:38 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 63 km ESE of Pangai, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1976-04-07 00:38:28 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.779° S, 173.900° 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
- OPERATOR_ASSIGNED
- Stations used
- 18
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.163 km ESE of Pangai, Tonga · 18439 days ago · 33 km deep · 93 km away
- 5.189 km ENE of ‘Ohonua, Tonga · 18413 days ago · 33 km deep · 39 km away
- 5.1114 km SE of Pangai, Tonga · 18389 days ago · 33 km deep · 32 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000fsr. Read Thu, Oct 1, 2026, 8:56 PM UTC.