M6.4 earthquake 283 km SSW of ‘Ohonua, Tonga
A magnitude 6.4 earthquake struck 283 km SSW of ‘Ohonua, Tonga on Fri, Sep 30, 1949, 4:18 PM GMT+12:20 (03:58 UTC), 25 km (16 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.4 (mw), strong
- Local time
- UTC
- 1949-09-30 03:58:55 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 23.684° S, 176.052° 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
- ±0.25
- 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 iscgem896894. Read Mon, Sep 21, 2026, 10:22 PM UTC.