Tonga earthquakes

M4.5 earthquake 70 km N of Hihifo, Tonga

A magnitude 4.5 earthquake struck 70 km N of Hihifo, Tonga on Sun, Jul 25, 2021, 3:37 AM GMT+13 (14:37 UTC), 74 km (46 mi) below the surface.

A larger quake followed: M5.2 79 km NW 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
4.5 (mb), light
Local time
UTC
2021-07-24 14:37:48 UTC
Depth
74.0 km (46.0 mi), intermediate-depth
Epicenter
15.329° S, 173.924° 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 10.3 km horizontally, 5.5 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
77°
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: 21 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.620 km WSW of Hihifo, Tonga · 1893 days ago · 113 km deep · 75 km away
  2. 5.085 km N of Hihifo, Tonga · 1893 days ago · 10 km deep · 19 km away
  3. 4.896 km N of Hihifo, Tonga · 1892 days ago · 93 km deep · 27 km away
  4. 4.875 km NW of Hihifo, Tonga · 1892 days ago · 175 km deep · 55 km away
  5. 4.881 km NE of Hihifo, Tonga · 1890 days ago · 32 km deep · 75 km away · felt by 7
  6. 4.6105 km NNE of Hihifo, Tonga · 1886 days ago · 10 km deep · 60 km away
  7. 4.898 km NE of Hihifo, Tonga · 1880 days ago · 10 km deep · 74 km away
  8. 4.953 km NE of Hihifo, Tonga · 1878 days ago · 78 km deep · 56 km away
  9. 4.545 km N of Hihifo, Tonga · 1867 days ago · 67 km deep · 28 km away
  10. 4.568 km N of Hihifo, Tonga · 1866 days ago · 133 km deep · 27 km away
  11. 4.6Tonga · 1863 days ago · 69 km deep · 91 km away
  12. 4.9108 km NE of Hihifo, Tonga · 1858 days ago · 10 km deep · 93 km away
  13. 4.535 km N of Hihifo, Tonga · 1856 days ago · 83 km deep · 36 km away
  14. 4.692 km NNE of Hihifo, Tonga · 1851 days ago · 10 km deep · 39 km away
  15. 4.566 km E of Hihifo, Tonga · 1850 days ago · 35 km deep · 100 km away
  16. 4.7106 km NE of Hihifo, Tonga · 1849 days ago · 10 km deep · 96 km away
  17. 4.86 km S of Hihifo, Tonga · 1849 days ago · 82 km deep · 77 km away
  18. 5.279 km NW of Hihifo, Tonga · 1844 days ago · 187 km deep · 42 km away
  19. 4.828 km N of Hihifo, Tonga · 1842 days ago · 59 km deep · 43 km away
  20. 4.995 km N of Hihifo, Tonga · 1842 days ago · 110 km deep · 26 km away · felt by 1
  21. 5.121 km NNE of Hihifo, Tonga · 1838 days ago · 67 km deep · 54 km away · felt by 3

Before

  1. 4.5108 km NE of Hihifo, Tonga · 1901 days ago · 10 km deep · 84 km away
  2. 4.753 km ENE of Hihifo, Tonga · 1907 days ago · 35 km deep · 78 km away
  3. 4.690 km NNE of Hihifo, Tonga · 1911 days ago · 10 km deep · 49 km away
  4. 4.6123 km NW of Hihifo, Tonga · 1913 days ago · 10 km deep · 65 km away
  5. 4.7106 km N of Hihifo, Tonga · 1916 days ago · 10 km deep · 45 km away
  6. 4.417 km NNW of Hihifo, Tonga · 1918 days ago · 35 km deep · 54 km away
  7. 4.3126 km WNW of Hihifo, Tonga · 1918 days ago · 249 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f0dd. Read Wed, Sep 30, 2026, 4:02 AM UTC.