Tonga earthquakes

M4.6 earthquake 90 km NNE of Hihifo, Tonga

A magnitude 4.6 earthquake struck 90 km NNE of Hihifo, Tonga on Wed, Jul 7, 2021, 5:41 AM GMT+13 (16:41 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.0 75 km E 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
2021-07-06 16:41:21 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.193° S, 173.491° 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 8.7 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
111°
Stations used
32

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 14 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 5.075 km E of Hihifo, Tonga · 1909 days ago · 10 km deep · 97 km away
  2. 4.753 km ENE of Hihifo, Tonga · 1907 days ago · 35 km deep · 64 km away
  3. 4.5108 km NE of Hihifo, Tonga · 1901 days ago · 10 km deep · 36 km away
  4. 4.570 km N of Hihifo, Tonga · 1894 days ago · 74 km deep · 49 km away
  5. 5.085 km N of Hihifo, Tonga · 1893 days ago · 10 km deep · 36 km away
  6. 4.896 km N of Hihifo, Tonga · 1893 days ago · 93 km deep · 43 km away
  7. 4.881 km NE of Hihifo, Tonga · 1891 days ago · 32 km deep · 41 km away · felt by 7
  8. 4.6105 km NNE of Hihifo, Tonga · 1886 days ago · 10 km deep · 15 km away
  9. 4.898 km NE of Hihifo, Tonga · 1881 days ago · 10 km deep · 27 km away
  10. 4.953 km NE of Hihifo, Tonga · 1878 days ago · 78 km deep · 44 km away
  11. 4.545 km N of Hihifo, Tonga · 1867 days ago · 67 km deep · 49 km away
  12. 4.568 km N of Hihifo, Tonga · 1866 days ago · 133 km deep · 26 km away
  13. 4.9108 km NE of Hihifo, Tonga · 1859 days ago · 10 km deep · 48 km away
  14. 4.535 km N of Hihifo, Tonga · 1857 days ago · 83 km deep · 60 km away

Before

  1. 4.7106 km N of Hihifo, Tonga · 1916 days ago · 10 km deep · 29 km away
  2. 4.417 km NNW of Hihifo, Tonga · 1918 days ago · 35 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000etrx. Read Wed, Sep 30, 2026, 9:37 AM UTC.