Tonga earthquakes

M4.6 earthquake 137 km SE of Pangai, Tonga

A magnitude 4.6 earthquake struck 137 km SE of Pangai, Tonga on Thu, Nov 23, 2017, 9:39 PM GMT+13 (08:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.7 130 km SSE 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, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-11-23 08:39:12 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
20.710° S, 173.444° 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 10.2 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
85°
Stations used
24

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 3 in the 30 days before it.

After

  1. 4.7102 km ESE of Pangai, Tonga · 3236 days ago · 10 km deep · 71 km away
  2. 4.6100 km ESE of Pangai, Tonga · 3234 days ago · 10 km deep · 56 km away
  3. 5.0111 km SE of Pangai, Tonga · 3230 days ago · 10 km deep · 31 km away
  4. 5.0132 km SSE of Pangai, Tonga · 3230 days ago · 10 km deep · 35 km away
  5. 5.7130 km SSE of Pangai, Tonga · 3219 days ago · 7 km deep · 32 km away
  6. 4.7117 km SE of Pangai, Tonga · 3219 days ago · 10 km deep · 20 km away
  7. 4.9137 km SSE of Pangai, Tonga · 3218 days ago · 10 km deep · 27 km away
  8. 4.6132 km E of Pangai, Tonga · 3218 days ago · 26 km deep · 82 km away
  9. 4.9111 km SE of Pangai, Tonga · 3216 days ago · 10 km deep · 26 km away
  10. 5.387 km SSE of Pangai, Tonga · 3211 days ago · 10 km deep · 56 km away

Before

  1. 4.682 km SSE of Pangai, Tonga · 3244 days ago · 10 km deep · 63 km away
  2. 4.9137 km SE of Pangai, Tonga · 3251 days ago · 10 km deep · 15 km away
  3. 4.677 km SE of Pangai, Tonga · 3263 days ago · 10 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000bjtc. Read Sun, Oct 4, 2026, 8:53 PM UTC.