Tonga earthquakes

M5.0 earthquake 102 km SSE of Hihifo, Tonga

A magnitude 5.0 earthquake struck 102 km SSE of Hihifo, Tonga on Sun, Aug 8, 2021, 12:16 PM GMT+13 (23:16 UTC), 35 km (22 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: 5.0 (mb), moderate
Local time: Sun, Aug 8, 2021, 12:16 PM GMT+13
UTC: 2021-08-07 23:16:21 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 16.772° S, 173.350° 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.

Location uncertainty: About 9.3 km horizontally, 1.8 km in depth
Magnitude uncertainty: ±0.06
Depth from: Operator assigned
Station coverage gap: 66°
Stations used: 128

Nearest places

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

Apia, SamoaPopulation 40,407. Forecast368 kmSSW

Nearby

Within 100 km, magnitude 2.0 and up: 11 in the 60 days after this one and 6 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 us6000f397 (also filed as iscgem620976256). Read Wed, Sep 30, 2026, 1:01 PM UTC.