M6.5 earthquake 221 km SSW of ‘Ohonua, Tonga
A magnitude 6.5 earthquake struck 221 km SSW of ‘Ohonua, Tonga on Fri, Jul 10, 1964, 12:22 AM GMT+13 (11:22 UTC), 28 km (18 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), strong
- Local time
- UTC
- 1964-07-09 11:22:05 UTC
- Depth
- 28.4 km (17.6 mi), shallow
- Epicenter
- 23.281° S, 175.478° 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: 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 iscgem865877. Read Wed, Sep 23, 2026, 5:02 AM UTC.