Tonga earthquakes

M5.0 earthquake 59 km SE of Pangai, Tonga

A magnitude 5.0 earthquake struck 59 km SE of Pangai, Tonga on Mon, Apr 5, 1976, 6:41 AM GMT+13 (17:41 UTC), 57 km (35 mi) below the surface.

A larger quake followed: M5.1 63 km ESE of Pangai, 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
1976-04-04 17:41:05 UTC
Depth
57.0 km (35.4 mi), shallow
Epicenter
20.116° S, 173.885° 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
38

Nearest places

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

Nearby

Within 100 km, magnitude 2.0 and up: 3 in the 60 days after this one and 0 in the 30 days before it.

After

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000fs1 (also filed as iscgem715067). Read Wed, Sep 30, 2026, 7:28 AM UTC.