Tonga earthquakes

M4.8 earthquake 75 km NW of Hihifo, Tonga

A magnitude 4.8 earthquake struck 75 km NW of Hihifo, Tonga on Mon, Jul 26, 2021, 7:29 PM GMT+13 (06:29 UTC), 175 km (109 mi) below the surface.

A larger quake followed: M5.2 79 km NW of Hihifo, Tonga. This one was a foreshock.

Apia 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: 4.8 (mb), light
Local time: Mon, Jul 26, 2021, 7:29 PM GMT+13
UTC: 2021-07-26 06:29:47 UTC
Depth: 175.0 km (108.7 mi), intermediate-depth
Epicenter: 15.560° S, 174.376° 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, 5.3 km in depth
Magnitude uncertainty: ±0.02
Depth from: From location
Station coverage gap: 21°
Stations used: 263

Nearest places

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

Apia, SamoaPopulation 40,407. Forecast340 kmSW

Nearby

Within 100 km, magnitude 1.8 and up: 12 in the 60 days after this one and 8 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 us6000ez3x (also filed as iscgem620846045). Read Wed, Sep 30, 2026, 4:02 AM UTC.