Tonga earthquakes

M4.1 earthquake 289 km WNW of Haveluloto, Tonga

A magnitude 4.1 earthquake struck 289 km WNW of Haveluloto, Tonga on Tue, Mar 23, 2021, 5:27 PM GMT+13 (04:27 UTC), 537 km (334 mi) below the surface.

A larger quake followed: M5.1 270 km WNW of Haveluloto, Tonga. This one was a foreshock.

Nuku‘alofa forecast More in Tonga

Map

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

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The earthquake

Magnitude: 4.1 (mb), light
Local time: Tue, Mar 23, 2021, 5:27 PM GMT+13
UTC: 2021-03-23 04:27:50 UTC
Depth: 537.3 km (333.9 mi), deep
Epicenter: 20.331° S, 177.849° 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 15.0 km horizontally, 6.0 km in depth
Magnitude uncertainty: ±0.11
Depth from: From location
Station coverage gap: 115°
Stations used: 36

Nearest places

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

Nuku‘alofa, TongaPopulation 22,400. Forecast290 kmWNW

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 14 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 us6000dxwz. Read Mon, Sep 28, 2026, 11:00 PM UTC.