M5.7 earthquake 116 km SW of Vaini, Tonga
A magnitude 5.7 earthquake struck 116 km SW of Vaini, Tonga on Fri, Jul 21, 1972, 9:37 PM GMT+13 (08:37 UTC), 124 km (77 mi) below the surface.
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
- 1972-07-21 08:37:13 UTC
- Depth
- 123.6 km (76.8 mi), intermediate-depth
- Epicenter
- 21.932° S, 175.973° 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
- ±0.88
- 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 iscgemsup771756 (also filed as iscgem771756). Read Tue, Sep 22, 2026, 7:07 AM UTC.