M4.7 earthquake Tonga region
A magnitude 4.7 earthquake struck in the Tonga region on Thu, Nov 13, 1975, 1:41 AM GMT-12 (13:41 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 135 km E of Neiafu, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1975-11-13 13:41:51 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 18.534° S, 172.544° 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
- 21
Nearby
Within 100 km, magnitude 1.7 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.2135 km E of Neiafu, Tonga · 18587 days ago · 33 km deep · 22 km away
- 5.2140 km ESE of Neiafu, Tonga · 18577 days ago · 33 km deep · 49 km away
- 5.2130 km ESE of Neiafu, Tonga · 18576 days ago · 33 km deep · 57 km away
- 4.669 km ENE of Neiafu, Tonga · 18573 days ago · 33 km deep · 85 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000djr. Read Sat, Oct 3, 2026, 4:37 PM UTC.