M6.5 earthquake 30 km SSW of Hihifo, Tonga
A magnitude 6.5 earthquake struck 30 km SSW of Hihifo, Tonga on Sun, Mar 10, 1968, 9:26 PM GMT-11 (08:26 UTC), 109 km (68 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.5 (Mw, moment), strong
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1968-03-11 08:26:33 UTC
- Depth
- 109.1 km (67.8 mi), intermediate-depth
- Epicenter
- 16.212° S, 173.889° 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
- ±0.30
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.5 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 iscgem824904. Read Thu, Oct 1, 2026, 3:59 AM UTC.