Tonga earthquakes

M4.7 earthquake 109 km NNE of Hihifo, Tonga

A magnitude 4.7 earthquake struck 109 km NNE of Hihifo, Tonga on Thu, May 21, 2020, 4:01 AM GMT+13 (15:01 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M6.1 141 km ENE 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
2020-05-20 15:01:28 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.109° S, 173.271° 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 13.0 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
129°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 13 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.6110 km ENE of Hihifo, Tonga · 2322 days ago · 10 km deep · 64 km away
  2. 4.888 km NE of Hihifo, Tonga · 2306 days ago · 10 km deep · 27 km away
  3. 4.6118 km NE of Hihifo, Tonga · 2278 days ago · 10 km deep · 20 km away
  4. 4.8119 km NNE of Hihifo, Tonga · 2276 days ago · 10 km deep · 19 km away
  5. 4.0133 km ENE of Hihifo, Tonga · 2275 days ago · 10 km deep · 68 km away
  6. 4.556 km N of Hihifo, Tonga · 2275 days ago · 121 km deep · 71 km away
  7. 4.593 km ENE of Hihifo, Tonga · 2274 days ago · 10 km deep · 55 km away
  8. 4.5143 km NE of Hihifo, Tonga · 2270 days ago · 10 km deep · 41 km away
  9. 6.1141 km ENE of Hihifo, Tonga · 2265 days ago · 12 km deep · 64 km away · felt by 1 · tsunami flag
  10. 4.9129 km NE of Hihifo, Tonga · 2265 days ago · 10 km deep · 34 km away
  11. 4.4155 km SSW of Lotofag?, Samoa · 2265 days ago · 10 km deep · 83 km away
  12. 4.3140 km NE of Hihifo, Tonga · 2265 days ago · 16 km deep · 60 km away
  13. 4.399 km NNE of Hihifo, Tonga · 2265 days ago · 10 km deep · 21 km away

Before

  1. 5.698 km ENE of Hihifo, Tonga · 2329 days ago · 24 km deep · 85 km away
  2. 5.787 km ENE of Hihifo, Tonga · 2329 days ago · 10 km deep · 56 km away
  3. 5.4125 km NE of Hihifo, Tonga · 2339 days ago · 10 km deep · 45 km away · felt by 3
  4. 4.788 km ENE of Hihifo, Tonga · 2339 days ago · 10 km deep · 52 km away
  5. 4.397 km NE of Hihifo, Tonga · 2340 days ago · 161 km deep · 30 km away
  6. 4.669 km ENE of Hihifo, Tonga · 2343 days ago · 10 km deep · 62 km away
  7. 4.587 km NE of Hihifo, Tonga · 2349 days ago · 10 km deep · 33 km away
  8. 4.654 km N of Hihifo, Tonga · 2354 days ago · 76 km deep · 62 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000a0zi. Read Wed, Sep 30, 2026, 8:36 PM UTC.