Tonga earthquakes

M4.5 earthquake 8 km SW of Hihifo, Tonga

A magnitude 4.5 earthquake struck 8 km SW of Hihifo, Tonga on Fri, Mar 6, 2020, 6:45 AM GMT+14 (16:45 UTC), 112 km (70 mi) below the surface.

A larger quake followed: M4.9 17 km SSE 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
4.5 (mb), light
Local time
UTC
2020-03-05 16:45:01 UTC
Depth
112.1 km (69.7 mi), intermediate-depth
Epicenter
16.010° S, 173.849° 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 10.0 km horizontally, 8.0 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
86°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60008d80. Read Wed, Sep 30, 2026, 7:25 PM UTC.