M5.6 earthquake 165 km NE of Neiafu, Tonga
A magnitude 5.6 earthquake struck 165 km NE of Neiafu, Tonga on Sun, Mar 14, 1971, 10:48 PM GMT-12 (10:48 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
- 1971-03-15 10:48:09 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 17.716° S, 172.761° 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
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 iscgem786382. Read Tue, Sep 22, 2026, 7:54 AM UTC.