M6.1 earthquake 194 km NW of Hihifo, Tonga
A magnitude 6.1 earthquake struck 194 km NW of Hihifo, Tonga on Sat, Oct 5, 1968, 9:47 PM GMT-11 (08:47 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M6.4 211 km WNW of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (mw), strong
- Local time
- UTC
- 1968-10-06 08:47:00 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 14.920° S, 175.257° 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: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.9186 km NW of Hihifo, Tonga · 21168 days ago · 15 km deep · 8 km away
- 6.4211 km WNW of Hihifo, Tonga · 21121 days ago · 25 km deep · 75 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem815665. Read Tue, Sep 22, 2026, 8:46 PM UTC.