Tonga earthquakes

M4.0 earthquake 295 km W of Haveluloto, Tonga

A magnitude 4.0 earthquake struck 295 km W of Haveluloto, Tonga on Sun, May 6, 2018, 12:58 PM GMT+13 (23:58 UTC), 464 km (289 mi) below the surface.

A larger quake followed: M5.4 Fiji region. 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
4.0 (mb), light
Local time
UTC
2018-05-05 23:58:36 UTC
Depth
464.4 km (288.6 mi), deep
Epicenter
20.973° S, 178.054° 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 14.7 km horizontally, 11.4 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
202°, poorly surrounded by stations
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 11 in the 30 days before it.

After

Before

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000e2uv. Read Tue, Sep 29, 2026, 10:09 PM UTC.