Tonga earthquakes

M4.6 earthquake 92 km ESE of Hihifo, Tonga

A magnitude 4.6 earthquake struck 92 km ESE of Hihifo, Tonga on Wed, Jul 22, 2020, 3:43 AM GMT+13 (14:43 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.0 100 km SSE 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
2020-07-21 14:43:35 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
16.154° S, 172.954° 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 6.8 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.15
Depth from
Operator assigned
Station coverage gap
94°
Stations used
21

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 6 in the 30 days before it.

After

  1. 4.424 km ESE of Hihifo, Tonga · 2262 days ago · 115 km deep · 69 km away
  2. 4.2138 km ENE of Hihifo, Tonga · 2257 days ago · 10 km deep · 100 km away
  3. 5.0100 km SSE of Hihifo, Tonga · 2254 days ago · 13 km deep · 90 km away
  4. 4.831 km NNE of Hihifo, Tonga · 2238 days ago · 38 km deep · 96 km away · felt by 1
  5. 4.885 km ESE of Hihifo, Tonga · 2236 days ago · 10 km deep · 14 km away
  6. 4.771 km ESE of Hihifo, Tonga · 2230 days ago · 10 km deep · 23 km away
  7. 4.686 km ESE of Hihifo, Tonga · 2229 days ago · 10 km deep · 7 km away
  8. 4.570 km ESE of Hihifo, Tonga · 2228 days ago · 10 km deep · 25 km away
  9. 4.181 km NE of Hihifo, Tonga · 2216 days ago · 10 km deep · 99 km away
  10. 4.485 km SE of Hihifo, Tonga · 2210 days ago · 79 km deep · 56 km away
  11. 4.7109 km NE of Hihifo, Tonga · 2207 days ago · 10 km deep · 91 km away

Before

  1. 4.696 km SE of Hihifo, Tonga · 2263 days ago · 10 km deep · 36 km away
  2. 4.4119 km E of Hihifo, Tonga · 2272 days ago · 10 km deep · 28 km away
  3. 4.593 km ENE of Hihifo, Tonga · 2275 days ago · 10 km deep · 68 km away
  4. 4.0133 km ENE of Hihifo, Tonga · 2275 days ago · 10 km deep · 90 km away
  5. 4.375 km ESE of Hihifo, Tonga · 2286 days ago · 10 km deep · 18 km away
  6. 4.2183 km E of Hihifo, Tonga · 2289 days ago · 10 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000b561. Read Wed, Sep 30, 2026, 9:29 PM UTC.