Tonga earthquakes

M4.6 earthquake 34 km NE of Pangai, Tonga

A magnitude 4.6 earthquake struck 34 km NE of Pangai, Tonga on Thu, Oct 1, 2020, 9:17 PM GMT+13 (08:17 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.0 62 km NE of Pangai, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

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
2020-10-01 08:17:58 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
19.615° S, 174.105° 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 8.3 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.15
Depth from
Operator assigned
Station coverage gap
81°
Stations used
32

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 10 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.463 km SSW of Neiafu, Tonga · 2189 days ago · 27 km deep · 46 km away
  2. 4.458 km NNE of Pangai, Tonga · 2189 days ago · 35 km deep · 28 km away
  3. 4.661 km S of Neiafu, Tonga · 2189 days ago · 35 km deep · 47 km away
  4. 4.945 km NNE of Pangai, Tonga · 2188 days ago · 35 km deep · 22 km away · felt by 1
  5. 4.948 km NE of Pangai, Tonga · 2185 days ago · 35 km deep · 18 km away · felt by 1
  6. 4.673 km NE of Pangai, Tonga · 2184 days ago · 35 km deep · 40 km away
  7. 4.464 km S of Neiafu, Tonga · 2183 days ago · 35 km deep · 43 km away
  8. 4.863 km NNE of Pangai, Tonga · 2181 days ago · 10 km deep · 41 km away
  9. 4.1Tonga · 2172 days ago · 23 km deep · 23 km away
  10. 5.062 km NE of Pangai, Tonga · 2170 days ago · 10 km deep · 30 km away

Before

  1. 4.247 km NE of Pangai, Tonga · 2189 days ago · 35 km deep · 13 km away
  2. 4.747 km NNE of Pangai, Tonga · 2189 days ago · 35 km deep · 25 km away
  3. 4.656 km N of Pangai, Tonga · 2189 days ago · 35 km deep · 38 km away
  4. 4.459 km NE of Pangai, Tonga · 2189 days ago · 35 km deep · 27 km away
  5. 6.439 km NE of Pangai, Tonga · 2189 days ago · 28 km deep · 9 km away · felt by 9 · tsunami flag
  6. 4.675 km WSW of Neiafu, Tonga · 2219 days ago · 94 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c6gi. Read Tue, Sep 29, 2026, 9:40 AM UTC.