Tonga earthquakes

M4.7 earthquake 86 km SSW of Hihifo, Tonga

A magnitude 4.7 earthquake struck 86 km SSW of Hihifo, Tonga on Thu, Apr 21, 2022, 7:40 AM GMT-12 (19:40 UTC), 118 km (73 mi) below the surface.

A larger quake followed: M5.8 Tonga. This one was a foreshock.

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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
2022-04-21 19:40:47 UTC
Depth
117.8 km (73.2 mi), intermediate-depth
Epicenter
16.691° S, 174.056° 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 14.0 km horizontally, 6.2 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
128°
Stations used
43

Nearby

Within 100 km, magnitude 1.7 and up: 12 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.3130 km SSW of Hihifo, Tonga · 1622 days ago · 126 km deep · 45 km away
  2. 4.536 km SW of Hihifo, Tonga · 1616 days ago · 138 km deep · 59 km away
  3. 4.954 km SE of Hihifo, Tonga · 1615 days ago · 56 km deep · 69 km away
  4. 4.446 km ESE of Hihifo, Tonga · 1605 days ago · 35 km deep · 97 km away
  5. 4.8124 km SSE of Hihifo, Tonga · 1605 days ago · 35 km deep · 77 km away
  6. 4.3139 km SSW of Hihifo, Tonga · 1596 days ago · 131 km deep · 54 km away
  7. 5.8Tonga · 1595 days ago · 122 km deep · 57 km away · felt by 6
  8. 4.3157 km SSW of Hihifo, Tonga · 1589 days ago · 163 km deep · 74 km away
  9. 4.76 km W of Hihifo, Tonga · 1589 days ago · 105 km deep · 85 km away
  10. 4.1163 km SW of Hihifo, Tonga · 1577 days ago · 186 km deep · 83 km away
  11. 4.0141 km NNW of Neiafu, Tonga · 1571 days ago · 144 km deep · 83 km away
  12. 4.4132 km NNW of Neiafu, Tonga · 1568 days ago · 147 km deep · 92 km away

Before

  1. 5.2127 km SSW of Hihifo, Tonga · 1642 days ago · 10 km deep · 47 km away · felt by 1
  2. 4.3165 km SW of Hihifo, Tonga · 1647 days ago · 252 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000hfeq. Read Wed, Sep 30, 2026, 2:02 PM UTC.