Tonga earthquakes

M4.6 earthquake 111 km NNE of Hihifo, Tonga

A magnitude 4.6 earthquake struck 111 km NNE of Hihifo, Tonga on Mon, Aug 17, 2020, 5:03 AM GMT+13 (16:03 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.6 79 km NNW 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
2020-08-16 16:03:48 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
14.977° S, 173.526° 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 9.6 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
52°
Stations used
23

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 15 in the 30 days before it.

After

  1. 4.5108 km NW of Hihifo, Tonga · 2228 days ago · 10 km deep · 92 km away
  2. 5.679 km NNW of Hihifo, Tonga · 2228 days ago · 10 km deep · 70 km away
  3. 4.7102 km NNE of Hihifo, Tonga · 2222 days ago · 10 km deep · 13 km away
  4. 4.181 km NE of Hihifo, Tonga · 2216 days ago · 10 km deep · 46 km away
  5. 5.4123 km NE of Hihifo, Tonga · 2214 days ago · 25 km deep · 63 km away · felt by 2
  6. 4.7109 km NE of Hihifo, Tonga · 2207 days ago · 10 km deep · 70 km away
  7. 4.0121 km NNE of Hihifo, Tonga · 2205 days ago · 35 km deep · 15 km away
  8. 4.7106 km NNE of Hihifo, Tonga · 2205 days ago · 20 km deep · 10 km away
  9. 4.3108 km NNE of Hihifo, Tonga · 2197 days ago · 10 km deep · 14 km away
  10. 5.193 km NNW of Hihifo, Tonga · 2192 days ago · 10 km deep · 60 km away
  11. 4.6140 km NNE of Hihifo, Tonga · 2190 days ago · 10 km deep · 29 km away

Before

  1. 4.8111 km NE of Hihifo, Tonga · 2238 days ago · 10 km deep · 43 km away
  2. 4.831 km NNE of Hihifo, Tonga · 2238 days ago · 38 km deep · 81 km away · felt by 1
  3. 4.6126 km NNE of Hihifo, Tonga · 2239 days ago · 10 km deep · 37 km away · felt by 1
  4. 4.5Tonga · 2241 days ago · 104 km deep · 62 km away
  5. 4.4110 km NNE of Hihifo, Tonga · 2242 days ago · 10 km deep · 34 km away
  6. 4.4115 km NE of Hihifo, Tonga · 2243 days ago · 10 km deep · 49 km away
  7. 4.3135 km NNE of Hihifo, Tonga · 2250 days ago · 10 km deep · 41 km away
  8. 4.6111 km NE of Hihifo, Tonga · 2252 days ago · 10 km deep · 45 km away
  9. 4.2138 km ENE of Hihifo, Tonga · 2257 days ago · 10 km deep · 95 km away
  10. 4.6113 km NE of Hihifo, Tonga · 2261 days ago · 10 km deep · 52 km away
  11. 4.4112 km NE of Hihifo, Tonga · 2262 days ago · 10 km deep · 37 km away
  12. 4.399 km NNE of Hihifo, Tonga · 2265 days ago · 10 km deep · 16 km away
  13. 4.3140 km NE of Hihifo, Tonga · 2265 days ago · 16 km deep · 90 km away
  14. 4.9129 km NE of Hihifo, Tonga · 2265 days ago · 10 km deep · 64 km away
  15. 6.1141 km ENE of Hihifo, Tonga · 2265 days ago · 12 km deep · 95 km away · felt by 1 · tsunami flag

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bib5. Read Wed, Sep 30, 2026, 10:20 PM UTC.