M5.1 earthquake 118 km SSE of Pangai, Tonga
A magnitude 5.1 earthquake struck 118 km SSE of Pangai, Tonga on Sat, May 24, 1975, 6:54 PM GMT+13 (05:54 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 90 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
- 5.1 (ms), moderate
- Local time
- UTC
- 1975-05-24 05:54:16 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.776° S, 173.859° 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
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 8 in the 60 days after this one and 4 in the 30 days before it.
After
- 5.064 km S of Pangai, Tonga · 18728 days ago · 39 km deep · 66 km away
- 5.1101 km SSE of Pangai, Tonga · 18728 days ago · 33 km deep · 19 km away
- 5.075 km E of ‘Ohonua, Tonga · 18723 days ago · 33 km deep · 78 km away
- 4.677 km SE of Pangai, Tonga · 18721 days ago · 33 km deep · 54 km away
- 5.490 km SSE of Pangai, Tonga · 18717 days ago · 23 km deep · 37 km away
- 5.785 km E of ‘Ohonua, Tonga · 18708 days ago · 15 km deep · 60 km away
- 5.093 km E of Pangai, Tonga · 18704 days ago · 12 km deep · 100 km away
- 4.9117 km E of ‘Ohonua, Tonga · 18698 days ago · 33 km deep · 41 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000b5g (also filed as iscgem729359). Read Tue, Sep 22, 2026, 7:31 AM UTC.