Tonga earthquakes

M4.8 earthquake 43 km SSE of Hihifo, Tonga

A magnitude 4.8 earthquake struck 43 km SSE of Hihifo, Tonga on Fri, Jul 23, 2021, 2:16 PM GMT+13 (01:16 UTC), 51 km (31 mi) below the surface.

A larger quake followed: M5.3 87 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
4.8 (mb), light
Local time
UTC
2021-07-23 01:16:38 UTC
Depth
50.5 km (31.4 mi), shallow
Epicenter
16.334° S, 173.691° 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 9.6 km horizontally, 5.6 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
68°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 17 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.620 km WSW of Hihifo, Tonga · 1893 days ago · 113 km deep · 48 km away
  2. 4.579 km SE of Hihifo, Tonga · 1893 days ago · 68 km deep · 41 km away
  3. 5.387 km SSE of Hihifo, Tonga · 1887 days ago · 10 km deep · 45 km away
  4. 5.0102 km SSE of Hihifo, Tonga · 1879 days ago · 35 km deep · 61 km away
  5. 4.666 km S of Hihifo, Tonga · 1879 days ago · 70 km deep · 26 km away
  6. 4.953 km NE of Hihifo, Tonga · 1878 days ago · 78 km deep · 87 km away
  7. 4.551 km SE of Hihifo, Tonga · 1878 days ago · 65 km deep · 32 km away
  8. 4.545 km N of Hihifo, Tonga · 1867 days ago · 67 km deep · 89 km away
  9. 4.386 km SSW of Hihifo, Tonga · 1865 days ago · 70 km deep · 65 km away
  10. 4.6Tonga · 1863 days ago · 69 km deep · 38 km away
  11. 4.535 km N of Hihifo, Tonga · 1856 days ago · 83 km deep · 79 km away
  12. 4.566 km E of Hihifo, Tonga · 1850 days ago · 35 km deep · 75 km away
  13. 4.86 km S of Hihifo, Tonga · 1849 days ago · 82 km deep · 37 km away
  14. 4.828 km N of Hihifo, Tonga · 1842 days ago · 59 km deep · 72 km away
  15. 4.4115 km SSW of Hihifo, Tonga · 1840 days ago · 163 km deep · 81 km away
  16. 4.486 km WSW of Hihifo, Tonga · 1839 days ago · 190 km deep · 93 km away
  17. 5.121 km NNE of Hihifo, Tonga · 1838 days ago · 67 km deep · 62 km away · felt by 3

Before

  1. 4.753 km ENE of Hihifo, Tonga · 1907 days ago · 35 km deep · 75 km away
  2. 5.075 km E of Hihifo, Tonga · 1909 days ago · 10 km deep · 75 km away
  3. 4.357 km SE of Hihifo, Tonga · 1913 days ago · 10 km deep · 23 km away
  4. 4.417 km NNW of Hihifo, Tonga · 1918 days ago · 35 km deep · 61 km away
  5. 4.5138 km S of Hihifo, Tonga · 1918 days ago · 10 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000ey5p. Read Wed, Sep 30, 2026, 5:31 AM UTC.