Tonga earthquakes

M5.0 earthquake 121 km S of Hihifo, Tonga

A magnitude 5.0 earthquake struck 121 km S of Hihifo, Tonga on Fri, Oct 22, 2021, 9:59 AM GMT-12 (21:59 UTC), 75 km (47 mi) below the surface.

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The earthquake

Magnitude: 5.0 (mb), moderate
Local time: Fri, Oct 22, 2021, 9:59 AM GMT-12
UTC: 2021-10-22 21:59:46 UTC
Depth: 75.1 km (46.6 mi), intermediate-depth
Epicenter: 17.040° S, 173.968° 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 7.9 km horizontally, 6.6 km in depth
Magnitude uncertainty: ±0.04
Depth from: From location
Station coverage gap: 54°
Stations used: 55

Nearby

Within 100 km, magnitude 2.0 and up: 11 in the 60 days after this one and 7 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 us6000fwvd (also filed as iscgem621237637). Read Wed, Sep 30, 2026, 6:58 AM UTC.