Tonga earthquakes

M4.6 earthquake 32 km S of Hihifo, Tonga

A magnitude 4.6 earthquake struck 32 km S of Hihifo, Tonga on Fri, Jun 21, 2019, 4:07 AM GMT+13 (15:07 UTC), 146 km (91 mi) below the surface.

A larger quake followed: M4.9 55 km NW of Hihifo, Tonga. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
4.6 (mb), light
Local time
UTC
2019-06-20 15:07:34 UTC
Depth
145.9 km (90.7 mi), intermediate-depth
Epicenter
16.244° S, 173.756° 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 9.5 km horizontally, 11.9 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
106°
Stations used
33

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 8 in the 60 days after this one and 0 in the 30 days before it.

After

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us700046pl. Read Wed, Sep 30, 2026, 12:47 AM UTC.