Tonga earthquakes

M4.4 earthquake 59 km ESE of Hihifo, Tonga

A magnitude 4.4 earthquake struck 59 km ESE of Hihifo, Tonga on Thu, Apr 29, 2021, 6:57 PM GMT+13 (05:57 UTC), 35 km (22 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
4.4 (mb), light
Local time
UTC
2021-04-29 05:57:36 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
16.072° S, 173.258° 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 9.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.16
Depth from
Operator assigned
Station coverage gap
146°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.650 km NNE of Hihifo, Tonga · 1974 days ago · 69 km deep · 70 km away
  2. 4.679 km ENE of Hihifo, Tonga · 1969 days ago · 10 km deep · 52 km away
  3. 4.766 km N of Hihifo, Tonga · 1969 days ago · 22 km deep · 97 km away
  4. 4.436 km S of Hihifo, Tonga · 1948 days ago · 80 km deep · 59 km away
  5. 4.8125 km E of Hihifo, Tonga · 1946 days ago · 10 km deep · 69 km away
  6. 4.5111 km ENE of Hihifo, Tonga · 1944 days ago · 10 km deep · 81 km away
  7. 4.422 km NW of Hihifo, Tonga · 1943 days ago · 106 km deep · 80 km away
  8. 4.436 km SE of Hihifo, Tonga · 1942 days ago · 102 km deep · 38 km away
  9. 4.4153 km ESE of Hihifo, Tonga · 1941 days ago · 10 km deep · 95 km away
  10. 4.667 km ESE of Hihifo, Tonga · 1938 days ago · 7 km deep · 16 km away
  11. 4.580 km ESE of Hihifo, Tonga · 1936 days ago · 35 km deep · 28 km away
  12. 4.7139 km ESE of Hihifo, Tonga · 1927 days ago · 10 km deep · 85 km away
  13. 4.4112 km E of Hihifo, Tonga · 1922 days ago · 10 km deep · 54 km away

Before

  1. 4.529 km SW of Hihifo, Tonga · 1984 days ago · 10 km deep · 79 km away
  2. 4.885 km NE of Hihifo, Tonga · 1991 days ago · 10 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000e0p7. Read Wed, Sep 30, 2026, 8:10 AM UTC.