Tonga earthquakes

M4.7 earthquake 106 km NE of Hihifo, Tonga

A magnitude 4.7 earthquake struck 106 km NE of Hihifo, Tonga on Tue, Sep 7, 2021, 4:27 PM GMT+13 (03:27 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.8 135 km SW of Gataivai, Samoa. 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
4.7 (mb), light
Local time
UTC
2021-09-07 03:27:59 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.348° S, 173.025° 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 12.8 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.15
Depth from
Operator assigned
Station coverage gap
145°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 14 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.7124 km E of Hihifo, Tonga · 1848 days ago · 10 km deep · 67 km away
  2. 4.828 km N of Hihifo, Tonga · 1843 days ago · 59 km deep · 94 km away
  3. 4.995 km N of Hihifo, Tonga · 1842 days ago · 110 km deep · 98 km away · felt by 1
  4. 5.121 km NNE of Hihifo, Tonga · 1838 days ago · 67 km deep · 88 km away · felt by 3
  5. 4.3105 km NNE of Hihifo, Tonga · 1833 days ago · 149 km deep · 43 km away
  6. 4.371 km NE of Hihifo, Tonga · 1830 days ago · 35 km deep · 35 km away
  7. 4.6136 km NNE of Hihifo, Tonga · 1824 days ago · 10 km deep · 50 km away
  8. 5.8135 km SW of Gataivai, Samoa · 1824 days ago · 20 km deep · 88 km away · felt by 3
  9. 4.4129 km SW of Gataivai, Samoa · 1824 days ago · 10 km deep · 74 km away
  10. 5.481 km NE of Hihifo, Tonga · 1820 days ago · 35 km deep · 28 km away · felt by 4
  11. 4.331 km ESE of Hihifo, Tonga · 1811 days ago · 107 km deep · 98 km away
  12. 4.6106 km ESE of Hihifo, Tonga · 1798 days ago · 10 km deep · 94 km away
  13. 4.313 km E of Hihifo, Tonga · 1793 days ago · 71 km deep · 98 km away
  14. 4.294 km NE of Hihifo, Tonga · 1792 days ago · 10 km deep · 12 km away

Before

  1. 4.566 km E of Hihifo, Tonga · 1851 days ago · 35 km deep · 60 km away
  2. 4.692 km NNE of Hihifo, Tonga · 1852 days ago · 10 km deep · 68 km away
  3. 4.535 km N of Hihifo, Tonga · 1857 days ago · 83 km deep · 90 km away
  4. 4.9108 km NE of Hihifo, Tonga · 1859 days ago · 10 km deep · 7 km away
  5. 4.568 km N of Hihifo, Tonga · 1866 days ago · 133 km deep · 69 km away
  6. 4.545 km N of Hihifo, Tonga · 1867 days ago · 67 km deep · 83 km away
  7. 4.953 km NE of Hihifo, Tonga · 1879 days ago · 78 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000fb3i. Read Wed, Sep 30, 2026, 11:30 AM UTC.