Tonga earthquakes

M5.7 earthquake 51 km SSW of ‘Ohonua, Tonga

A magnitude 5.7 earthquake struck 51 km SSW of ‘Ohonua, Tonga on Wed, Aug 7, 1974, 7:38 AM GMT+13 (18:38 UTC), 48 km (30 mi) below the surface.

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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
5.7 (ms), moderate
Local time
UTC
1974-08-06 18:38:13 UTC
Depth
48.0 km (29.8 mi), shallow
Epicenter
21.758° S, 175.161° 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
70

Nearest places

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

Nearby

Within 100 km, magnitude 2.7 and up: 4 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 5.031 km SSW of Vaini, Tonga · 19042 days ago · 33 km deep · 34 km away
  2. 4.8112 km SSW of Vaini, Tonga · 19038 days ago · 170 km deep · 65 km away
  3. 4.849 km ESE of ‘Ohonua, Tonga · 19028 days ago · 33 km deep · 72 km away
  4. 5.1140 km SSW of ‘Ohonua, Tonga · 19018 days ago · 58 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00007gn (also filed as iscgem738396). Read Tue, Sep 29, 2026, 5:03 AM UTC.