M5.6 earthquake 146 km W of Pangai, Tonga
A magnitude 5.6 earthquake struck 146 km W of Pangai, Tonga on Mon, Aug 31, 1964, 10:44 AM GMT+13 (21:44 UTC), 240 km (149 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
- 1964-08-30 21:44:56 UTC
- Depth
- 240.0 km (149.1 mi), intermediate-depth
- Epicenter
- 19.876° S, 175.753° 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
- ±0.24
- 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 iscgem865580. Read Wed, Sep 23, 2026, 3:31 AM UTC.