M5.9 earthquake 91 km NNE of Hihifo, Tonga
A magnitude 5.9 earthquake struck 91 km NNE of Hihifo, Tonga on Sat, Jun 1, 1963, 10:13 AM GMT-11 (21:13 UTC), 20 km (12 mi) below the surface.
A larger quake followed: M6.0 107 km NE 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
- 5.9 (mw), moderate
- Local time
- UTC
- 1963-06-01 21:13:53 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 15.236° S, 173.377° 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: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 6.0107 km NE of Hihifo, Tonga · 23118 days ago · 20 km deep · 33 km away
- 6.0125 km ENE of Hihifo, Tonga · 23118 days ago · 20 km deep · 85 km away
- 5.6101 km ENE of Hihifo, Tonga · 23118 days ago · 20 km deep · 57 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem872436. Read Tue, Sep 22, 2026, 11:28 PM UTC.