Tonga earthquakes

M4.7 earthquake 139 km ESE of Hihifo, Tonga

A magnitude 4.7 earthquake struck 139 km ESE of Hihifo, Tonga on Tue, Jun 22, 2021, 6:32 AM GMT+13 (17:32 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.1 228 km SE 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
4.7 (mb), light
Local time
UTC
2021-06-21 17:32:18 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
16.568° S, 172.651° 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 11.2 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
185°, poorly surrounded by stations
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 10 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.4112 km E of Hihifo, Tonga · 1922 days ago · 10 km deep · 56 km away
  2. 4.357 km SE of Hihifo, Tonga · 1913 days ago · 10 km deep · 91 km away
  3. 5.075 km E of Hihifo, Tonga · 1909 days ago · 10 km deep · 81 km away
  4. 4.4164 km ESE of Hihifo, Tonga · 1909 days ago · 10 km deep · 44 km away
  5. 4.7172 km ESE of Hihifo, Tonga · 1906 days ago · 10 km deep · 35 km away
  6. 5.1228 km SE of Hihifo, Tonga · 1897 days ago · 10 km deep · 98 km away
  7. 4.8208 km SE of Hihifo, Tonga · 1894 days ago · 10 km deep · 87 km away
  8. 4.579 km SE of Hihifo, Tonga · 1893 days ago · 68 km deep · 77 km away
  9. 5.0102 km SSE of Hihifo, Tonga · 1879 days ago · 35 km deep · 78 km away
  10. 4.551 km SE of Hihifo, Tonga · 1878 days ago · 65 km deep · 89 km away

Before

  1. 4.7181 km ESE of Hihifo, Tonga · 1931 days ago · 10 km deep · 44 km away
  2. 5.5157 km SE of Hihifo, Tonga · 1931 days ago · 10 km deep · 48 km away
  3. 4.580 km ESE of Hihifo, Tonga · 1936 days ago · 35 km deep · 60 km away
  4. 4.667 km ESE of Hihifo, Tonga · 1938 days ago · 7 km deep · 73 km away
  5. 4.4153 km ESE of Hihifo, Tonga · 1940 days ago · 10 km deep · 29 km away
  6. 4.8125 km E of Hihifo, Tonga · 1946 days ago · 10 km deep · 68 km away
  7. 4.5221 km SE of Hihifo, Tonga · 1956 days ago · 10 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000epq6. Read Wed, Sep 30, 2026, 6:15 AM UTC.