Tonga earthquakes

M4.7 earthquake 106 km NNE of Hihifo, Tonga

A magnitude 4.7 earthquake struck 106 km NNE of Hihifo, Tonga on Thu, Sep 17, 2020, 5:56 PM GMT+13 (04:56 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M6.2 83 km NNE 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
2020-09-17 04:56:07 UTC
Depth
19.6 km (12.2 mi), shallow
Epicenter
15.045° S, 173.464° 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 10.8 km horizontally, 4.9 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
125°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 9 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.3108 km NNE of Hihifo, Tonga · 2197 days ago · 10 km deep · 4 km away
  2. 5.193 km NNW of Hihifo, Tonga · 2192 days ago · 10 km deep · 65 km away
  3. 4.6140 km NNE of Hihifo, Tonga · 2190 days ago · 10 km deep · 34 km away
  4. 4.668 km N of Hihifo, Tonga · 2174 days ago · 64 km deep · 43 km away
  5. 5.976 km NNE of Hihifo, Tonga · 2166 days ago · 39 km deep · 36 km away · felt by 9
  6. 4.783 km NE of Hihifo, Tonga · 2166 days ago · 35 km deep · 46 km away
  7. 4.284 km NNW of Hihifo, Tonga · 2163 days ago · 10 km deep · 80 km away
  8. 4.4107 km NNE of Hihifo, Tonga · 2155 days ago · 10 km deep · 11 km away
  9. 6.283 km NNE of Hihifo, Tonga · 2154 days ago · 34 km deep · 23 km away · felt by 13

Before

  1. 4.0121 km NNE of Hihifo, Tonga · 2205 days ago · 35 km deep · 15 km away
  2. 4.7109 km NE of Hihifo, Tonga · 2207 days ago · 10 km deep · 60 km away
  3. 5.4123 km NE of Hihifo, Tonga · 2214 days ago · 25 km deep · 54 km away · felt by 2
  4. 4.181 km NE of Hihifo, Tonga · 2216 days ago · 10 km deep · 36 km away
  5. 4.7102 km NNE of Hihifo, Tonga · 2223 days ago · 10 km deep · 5 km away
  6. 5.679 km NNW of Hihifo, Tonga · 2228 days ago · 10 km deep · 72 km away
  7. 4.5108 km NW of Hihifo, Tonga · 2228 days ago · 10 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bzp2. Read Wed, Sep 30, 2026, 11:14 PM UTC.