Tonga earthquakes

M5.7 earthquake 85 km E of ‘Ohonua, Tonga

A magnitude 5.7 earthquake struck 85 km E of ‘Ohonua, Tonga on Sat, Jul 5, 1975, 12:25 AM GMT+13 (11:25 UTC), 15 km (9 mi) below the surface.

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Map

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

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The earthquake

Magnitude
5.7 (mb), moderate
Local time
UTC
1975-07-04 11:25:24 UTC
Depth
15.0 km (9.3 mi), shallow
Epicenter
21.255° S, 174.133° 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
89

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.9117 km E of ‘Ohonua, Tonga · 18698 days ago · 33 km deep · 34 km away
  2. 4.856 km NE of ‘Ohonua, Tonga · 18669 days ago · 109 km deep · 51 km away

Before

  1. 5.490 km SSE of Pangai, Tonga · 18718 days ago · 23 km deep · 72 km away
  2. 5.075 km E of ‘Ohonua, Tonga · 18723 days ago · 33 km deep · 18 km away
  3. 5.1101 km SSE of Pangai, Tonga · 18729 days ago · 33 km deep · 68 km away
  4. 5.064 km S of Pangai, Tonga · 18729 days ago · 39 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000bwe (also filed as iscgem725837). Read Tue, Sep 22, 2026, 4:11 PM UTC.