Tonga earthquakes

M4.6 earthquake 79 km ENE of Hihifo, Tonga

A magnitude 4.6 earthquake struck 79 km ENE of Hihifo, Tonga on Mon, May 10, 2021, 3:26 PM GMT+13 (02:26 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.8 125 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
2021-05-10 02:26:39 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.619° S, 173.138° 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 10.6 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
126°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 15 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.766 km N of Hihifo, Tonga · 1969 days ago · 22 km deep · 74 km away
  2. 4.6126 km NNE of Hihifo, Tonga · 1961 days ago · 10 km deep · 69 km away
  3. 4.3127 km NNE of Hihifo, Tonga · 1955 days ago · 10 km deep · 95 km away
  4. 4.436 km S of Hihifo, Tonga · 1948 days ago · 80 km deep · 99 km away
  5. 4.8125 km E of Hihifo, Tonga · 1946 days ago · 10 km deep · 67 km away
  6. 4.5111 km ENE of Hihifo, Tonga · 1944 days ago · 10 km deep · 33 km away
  7. 4.422 km NW of Hihifo, Tonga · 1943 days ago · 106 km deep · 91 km away
  8. 4.436 km SE of Hihifo, Tonga · 1942 days ago · 102 km deep · 81 km away
  9. 4.667 km ESE of Hihifo, Tonga · 1938 days ago · 7 km deep · 66 km away
  10. 4.580 km ESE of Hihifo, Tonga · 1936 days ago · 35 km deep · 75 km away
  11. 4.4112 km E of Hihifo, Tonga · 1922 days ago · 10 km deep · 65 km away
  12. 4.417 km NNW of Hihifo, Tonga · 1918 days ago · 35 km deep · 80 km away
  13. 4.7106 km N of Hihifo, Tonga · 1916 days ago · 10 km deep · 90 km away
  14. 4.357 km SE of Hihifo, Tonga · 1913 days ago · 10 km deep · 92 km away
  15. 4.690 km NNE of Hihifo, Tonga · 1912 days ago · 10 km deep · 61 km away

Before

  1. 4.650 km NNE of Hihifo, Tonga · 1974 days ago · 69 km deep · 50 km away
  2. 4.459 km ESE of Hihifo, Tonga · 1980 days ago · 35 km deep · 52 km away
  3. 4.592 km NNE of Hihifo, Tonga · 1980 days ago · 29 km deep · 65 km away
  4. 4.6Samoa Islands region · 1984 days ago · 10 km deep · 76 km away
  5. 4.885 km NE of Hihifo, Tonga · 1992 days ago · 10 km deep · 20 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000e3ss. Read Wed, Sep 30, 2026, 9:39 AM UTC.