Tonga earthquakes

M4.4 earthquake 120 km NW of Neiafu, Tonga

A magnitude 4.4 earthquake struck 120 km NW of Neiafu, Tonga on Thu, Jan 23, 1975, 3:53 PM GMT+13 (02:53 UTC), 97 km (60 mi) below the surface.

A larger quake followed: M5.1 142 km SW of Hihifo, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

Map

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

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The earthquake

Magnitude
4.4 (mb), light
Local time
UTC
1975-01-23 02:53:56 UTC
Depth
97.0 km (60.3 mi), intermediate-depth
Epicenter
17.809° S, 174.713° 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
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 2 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00009ky. Read Tue, Sep 22, 2026, 11:24 AM UTC.