Tonga earthquakes

M4.3 earthquake 91 km ESE of Neiafu, Tonga

A magnitude 4.3 earthquake struck 91 km ESE of Neiafu, Tonga on Sat, Oct 31, 2020, 9:28 PM GMT+13 (08:28 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.4 125 km E of Neiafu, 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
4.3 (mb), light
Local time
UTC
2020-10-31 08:28:58 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
19.036° S, 173.220° 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 10.3 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.16
Depth from
Operator assigned
Station coverage gap
131°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 4.478 km ESE of Neiafu, Tonga · 2140 days ago · 10 km deep · 25 km away
  2. 4.576 km SSE of Neiafu, Tonga · 2127 days ago · 35 km deep · 68 km away
  3. 5.4125 km E of Neiafu, Tonga · 2124 days ago · 10 km deep · 46 km away
  4. 4.449 km NE of Pangai, Tonga · 2123 days ago · 35 km deep · 98 km away
  5. 5.2111 km ESE of Neiafu, Tonga · 2123 days ago · 10 km deep · 28 km away
  6. 4.6122 km E of Neiafu, Tonga · 2118 days ago · 10 km deep · 53 km away
  7. 4.6134 km E of Neiafu, Tonga · 2105 days ago · 10 km deep · 58 km away

Before

  1. 5.9189 km ESE of Neiafu, Tonga · 2169 days ago · 10 km deep · 99 km away
  2. 5.062 km NE of Pangai, Tonga · 2170 days ago · 10 km deep · 89 km away
  3. 4.1Tonga · 2172 days ago · 23 km deep · 94 km away
  4. 4.9133 km ESE of Neiafu, Tonga · 2173 days ago · 10 km deep · 45 km away
  5. 4.464 km S of Neiafu, Tonga · 2183 days ago · 35 km deep · 91 km away
  6. 4.673 km NE of Pangai, Tonga · 2184 days ago · 35 km deep · 73 km away
  7. 4.4Tonga region · 2188 days ago · 10 km deep · 51 km away
  8. 4.661 km S of Neiafu, Tonga · 2189 days ago · 35 km deep · 86 km away
  9. 4.458 km NNE of Pangai, Tonga · 2189 days ago · 35 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000cav8. Read Tue, Sep 29, 2026, 10:06 AM UTC.