Tonga earthquakes

M4.3 earthquake 278 km W of Haveluloto, Tonga

A magnitude 4.3 earthquake struck 278 km W of Haveluloto, Tonga on Sun, Jul 17, 2016, 9:04 AM GMT+13 (20:04 UTC), 504 km (313 mi) below the surface.

A larger quake followed: M4.8 270 km WNW of Haveluloto, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

Map

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

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The earthquake

Magnitude
4.3 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-07-16 20:04:57 UTC
Depth
503.5 km (312.9 mi), deep
Epicenter
20.859° S, 177.877° 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.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 13.7 km horizontally, 15.3 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
232°, poorly surrounded by stations
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 14 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 us20006gf9. Read Fri, Oct 2, 2026, 1:47 AM UTC.