M4.5 earthquake 111 km SE of Pangai, Tonga
A magnitude 4.5 earthquake struck 111 km SE of Pangai, Tonga on Sun, Mar 2, 1975, 10:08 PM GMT+13 (09:08 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 76 km SSE 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
- 4.5 (mb), light
- Local time
- UTC
- 1975-03-02 09:08:21 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.427° S, 173.509° 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 1.5 and up: 4 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 usp0000a34. Read Tue, Sep 22, 2026, 11:32 PM UTC.