Tonga earthquakes

M4.6 earthquake 110 km NNE of Hihifo, Tonga

A magnitude 4.6 earthquake struck 110 km NNE of Hihifo, Tonga on Sat, Jan 2, 2021, 2:45 PM GMT+14 (00:45 UTC), 47 km (29 mi) below the surface.

A larger quake followed: M5.0 122 km NE 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
2021-01-02 00:45:46 UTC
Depth
47.1 km (29.3 mi), shallow
Epicenter
15.083° S, 173.291° 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 8.0 km horizontally, 9.4 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
94°
Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 11 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.6108 km NNE of Hihifo, Tonga · 2092 days ago · 10 km deep · 21 km away
  2. 4.450 km N of Hihifo, Tonga · 2082 days ago · 62 km deep · 76 km away
  3. 4.983 km NE of Hihifo, Tonga · 2081 days ago · 10 km deep · 45 km away
  4. 4.586 km E of Hihifo, Tonga · 2080 days ago · 10 km deep · 95 km away
  5. 4.663 km N of Hihifo, Tonga · 2073 days ago · 85 km deep · 54 km away
  6. 4.572 km ENE of Hihifo, Tonga · 2067 days ago · 10 km deep · 63 km away
  7. 4.696 km NE of Hihifo, Tonga · 2064 days ago · 10 km deep · 40 km away
  8. 4.5117 km NE of Hihifo, Tonga · 2063 days ago · 10 km deep · 31 km away
  9. 4.933 km NE of Hihifo, Tonga · 2060 days ago · 37 km deep · 78 km away
  10. 5.0122 km NE of Hihifo, Tonga · 2046 days ago · 10 km deep · 17 km away · felt by 1
  11. 5.0112 km NNE of Hihifo, Tonga · 2044 days ago · 10 km deep · 6 km away · felt by 2

Before

  1. 4.9138 km NNE of Hihifo, Tonga · 2117 days ago · 10 km deep · 29 km away
  2. 4.668 km ENE of Hihifo, Tonga · 2121 days ago · 10 km deep · 67 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000d7rz. Read Wed, Sep 30, 2026, 1:54 PM UTC.