Tonga earthquakes

M4.1 earthquake Tonga

A magnitude 4.1 earthquake struck in Tonga on Sun, Oct 18, 2020, 9:57 PM GMT+13 (08:57 UTC), 23 km (14 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.

Open the live map with earthquakes

The earthquake

Magnitude
4.1 (mb), light
Local time
UTC
2020-10-18 08:57:15 UTC
Depth
22.6 km (14.0 mi), shallow
Epicenter
19.427° S, 174.009° 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 12.5 km horizontally, 6.5 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
106°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 5.062 km NE of Pangai, Tonga · 2170 days ago · 10 km deep · 6 km away
  2. 4.391 km ESE of Neiafu, Tonga · 2159 days ago · 10 km deep · 94 km away
  3. 4.576 km SSE of Neiafu, Tonga · 2127 days ago · 35 km deep · 26 km away
  4. 4.449 km NE of Pangai, Tonga · 2123 days ago · 35 km deep · 12 km away

Before

  1. 4.863 km NNE of Pangai, Tonga · 2181 days ago · 10 km deep · 28 km away
  2. 4.464 km S of Neiafu, Tonga · 2183 days ago · 35 km deep · 22 km away
  3. 4.673 km NE of Pangai, Tonga · 2184 days ago · 35 km deep · 22 km away
  4. 4.948 km NE of Pangai, Tonga · 2185 days ago · 35 km deep · 9 km away · felt by 1
  5. 4.945 km NNE of Pangai, Tonga · 2188 days ago · 35 km deep · 19 km away · felt by 1
  6. 4.661 km S of Neiafu, Tonga · 2189 days ago · 35 km deep · 25 km away
  7. 4.458 km NNE of Pangai, Tonga · 2189 days ago · 35 km deep · 7 km away
  8. 4.463 km SSW of Neiafu, Tonga · 2189 days ago · 27 km deep · 30 km away
  9. 4.634 km NE of Pangai, Tonga · 2189 days ago · 35 km deep · 23 km away
  10. 4.247 km NE of Pangai, Tonga · 2189 days ago · 35 km deep · 14 km away
  11. 4.747 km NNE of Pangai, Tonga · 2189 days ago · 35 km deep · 20 km away
  12. 4.656 km N of Pangai, Tonga · 2189 days ago · 35 km deep · 30 km away
  13. 4.459 km NE of Pangai, Tonga · 2189 days ago · 35 km deep · 4 km away
  14. 6.439 km NE of Pangai, Tonga · 2189 days ago · 28 km deep · 17 km away · felt by 9 · tsunami flag

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000cbgp. Read Tue, Sep 29, 2026, 8:47 AM UTC.