M5.6 earthquake 225 km E of Hihifo, Tonga
A magnitude 5.6 earthquake struck 225 km E of Hihifo, Tonga on Fri, Oct 9, 1964, 10:34 AM GMT-11 (21:34 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.6 (mw), moderate
- Local time
- UTC
- 1964-10-09 21:34:08 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 16.220° S, 171.704° 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
- ±0.48
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.6 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 iscgem863394. Read Wed, Sep 30, 2026, 9:40 AM UTC.