Tonga earthquakes

M4.7 earthquake 22 km S of Pangai, Tonga

A magnitude 4.7 earthquake struck 22 km S of Pangai, Tonga on Mon, Oct 23, 2006, 6:41 PM GMT+13 (05:41 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.1 29 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
4.7 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2006-10-23 05:41:15 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
20.015° S, 174.388° W
Region
Tonga
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

The USGS’s account of the effects of this earthquake.

no people dead or missing; no people injured; no buildings damaged or destroyed

From the USGS event page for usp000evum. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from
OPERATOR_ASSIGNED
Station coverage gap
53°
Stations used
32

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 10 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.322 km ENE of Pangai, Tonga · 7285 days ago · 3 km deep · 38 km away
  2. 4.180 km W of Pangai, Tonga · 7283 days ago · 261 km deep · 81 km away
  3. 4.235 km NW of Pangai, Tonga · 7273 days ago · 35 km deep · 50 km away
  4. 4.430 km ENE of Pangai, Tonga · 7263 days ago · 57 km deep · 44 km away
  5. 5.129 km SSE of Pangai, Tonga · 7261 days ago · 70 km deep · 15 km away
  6. 5.09 km SE of Pangai, Tonga · 7254 days ago · 10 km deep · 18 km away
  7. 5.161 km SSE of Pangai, Tonga · 7240 days ago · 10 km deep · 46 km away
  8. 5.052 km SSE of Pangai, Tonga · 7240 days ago · 35 km deep · 36 km away
  9. 4.554 km SSW of Pangai, Tonga · 7233 days ago · 35 km deep · 33 km away
  10. 4.457 km NW of Pangai, Tonga · 7229 days ago · 25 km deep · 73 km away

Before

  1. 4.625 km SW of Pangai, Tonga · 7294 days ago · 35 km deep · 19 km away
  2. 4.4108 km SE of Pangai, Tonga · 7295 days ago · 35 km deep · 95 km away
  3. 4.467 km NW of Pangai, Tonga · 7304 days ago · 12 km deep · 83 km away
  4. 4.517 km WSW of Pangai, Tonga · 7310 days ago · 25 km deep · 21 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000evum. Read Mon, Oct 5, 2026, 1:49 AM UTC.