Tonga earthquakes

M4.9 earthquake 201 km W of Haveluloto, Tonga

A magnitude 4.9 earthquake struck 201 km W of Haveluloto, Tonga on Thu, Apr 22, 2021, 10:49 AM GMT+13 (21:49 UTC), 292 km (182 mi) below the surface.

A larger quake followed: M6.5 207 km WSW 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: 4.9 (mb), light
Local time: Thu, Apr 22, 2021, 10:49 AM GMT+13
UTC: 2021-04-21 21:49:47 UTC
Depth: 292.2 km (181.6 mi), intermediate-depth
Epicenter: 21.030° S, 177.148° 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 10.7 km horizontally, 6.2 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 117°
Stations used: 104

Nearest places

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

Nuku‘alofa, TongaPopulation 22,400. Forecast202 kmW

Nearby

Within 100 km, magnitude 1.9 and up: 13 in the 60 days after this one and 4 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 us6000e3id (also filed as iscgem620342066). Read Wed, Sep 30, 2026, 12:57 AM UTC.