M5.7 earthquake 94 km SW of Hihifo, Tonga
A magnitude 5.7 earthquake struck 94 km SW of Hihifo, Tonga on Thu, Sep 21, 1972, 11:45 PM GMT-12 (11:45 UTC), 180 km (112 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
- 1972-09-22 11:45:11 UTC
- Depth
- 180.3 km (112.0 mi), intermediate-depth
- Epicenter
- 16.633° S, 174.330° 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
- ±0.26
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem769749. Read Tue, Sep 22, 2026, 12:26 AM UTC.