M4.7 earthquake 249 km WNW of Pangai, Tonga
A magnitude 4.7 earthquake struck 249 km WNW of Pangai, Tonga on Sun, Nov 21, 1976, 8:55 PM GMT+13 (07:55 UTC), 331 km (206 mi) below the surface.
A larger quake followed: M5.9 253 km WNW 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
- 4.7 (mb), light
- Local time
- UTC
- 1976-11-21 07:55:08 UTC
- Depth
- 331.0 km (205.7 mi), deep
- Epicenter
- 18.735° S, 176.435° 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
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000kdp. Read Tue, Sep 29, 2026, 8:30 AM UTC.