Tonga earthquakes

M5.0 earthquake 127 km NW of Neiafu, Tonga

A magnitude 5.0 earthquake struck 127 km NW of Neiafu, Tonga on Sat, Nov 29, 1975, 5:44 AM GMT+13 (16:44 UTC), 78 km (48 mi) below the surface.

A larger quake followed: M5.1 158 km SW of Hihifo, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1975-11-28 16:44:44 UTC
Depth
78.0 km (48.5 mi), intermediate-depth
Epicenter
17.727° S, 174.710° 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.

Stations used
33

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.0 and up: 1 in the 60 days after this one and 3 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000drx. Read Tue, Sep 22, 2026, 8:02 AM UTC.