Tonga earthquakes

M5.0 earthquake 214 km S of ‘Ohonua, Tonga

A magnitude 5.0 earthquake struck 214 km S of ‘Ohonua, Tonga on Thu, Jul 14, 1977, 3:06 AM GMT+13 (14:06 UTC), 63 km (39 mi) below the surface.

A larger quake followed: M5.3 224 km SSW of ‘Ohonua, Tonga. This one was a foreshock.

Nuku‘alofa forecast More 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 (ms), moderate
Local time: Thu, Jul 14, 1977, 3:06 AM GMT+13
UTC: 1977-07-13 14:06:00 UTC
Depth: 63.0 km (39.1 mi), shallow
Epicenter: 23.242° S, 175.306° 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: 25

Nearest places

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

Nuku‘alofa, TongaPopulation 22,400. Forecast234 kmS

Nearby

Within 100 km, magnitude 2.0 and up: 5 in the 60 days after this one and 15 in the 30 days before it.

After

Before

Earthquakes today Tonga earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000pqc (also filed as iscgem695916). Read Tue, Sep 22, 2026, 11:19 AM UTC.