Tonga earthquakes

M4.9 earthquake 117 km NE of Hihifo, Tonga

A magnitude 4.9 earthquake struck 117 km NE of Hihifo, Tonga on Wed, Jan 23, 2019, 3:20 AM GMT+14 (13:20 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.3 119 km NE 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: 4.9 (mb), light
Local time: Wed, Jan 23, 2019, 3:20 AM GMT+14
UTC: 2019-01-22 13:20:18 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 15.110° S, 173.131° 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 8.8 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.08
Depth from: Operator assigned
Station coverage gap: 97°
Stations used: 23

Nearest places

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

Apia, SamoaPopulation 40,407. Forecast204 kmSW

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 us2000j786 (also filed as iscgem614583109). Read Mon, Sep 28, 2026, 7:04 AM UTC.