M5.7 earthquake 74 km ENE of Kolonga, Tonga
A magnitude 5.7 earthquake struck 74 km ENE of Kolonga, Tonga on Thu, Sep 15, 1960, 11:38 AM GMT+12:20 (23:18 UTC), 25 km (16 mi) below the surface.
A larger quake followed: M5.9 Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.7 (mw), moderate
- Local time
- UTC
- 1960-09-14 23:18:41 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 20.878° S, 174.408° 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.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 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 iscgem880334. Read Thu, Sep 24, 2026, 4:00 AM UTC.