M6.3 earthquake 124 km ENE of Hihifo, Tonga
A magnitude 6.3 earthquake struck 124 km ENE of Hihifo, Tonga on Sat, Apr 20, 1968, 1:25 AM GMT-11 (12:25 UTC), 17 km (11 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.3 (mw), strong
- Local time
- UTC
- 1968-04-20 12:25:09 UTC
- Depth
- 17.1 km (10.6 mi), shallow
- Epicenter
- 15.664° S, 172.672° 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
- ±0.40
- 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: 2 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 iscgem824136. Read Tue, Sep 22, 2026, 2:35 AM UTC.