M4.7 earthquake 66 km SE of Pangai, Tonga
A magnitude 4.7 earthquake struck 66 km SE of Pangai, Tonga on Sun, Oct 13, 1974, 7:56 PM GMT+13 (06:56 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 48 km S 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 (ms), light
- Local time
- UTC
- 1974-10-13 06:56:06 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.313° S, 173.994° 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
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.050 km S of Pangai, Tonga · 18973 days ago · 44 km deep · 42 km away
- 5.448 km S of Pangai, Tonga · 18923 days ago · 33 km deep · 31 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00008d4. Read Tue, Sep 29, 2026, 11:55 PM UTC.