Tonga earthquakes

M4.2 earthquake Tonga

A magnitude 4.2 earthquake struck in Tonga on Wed, Aug 2, 2006, 8:35 PM GMT-12 (08:35 UTC), 66 km (41 mi) below the surface.

A larger quake followed: M4.7 86 km NE of Neiafu, Tonga. This one was a foreshock.

More in Tonga

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2006-08-03 08:35:32 UTC
Depth
65.5 km (40.7 mi), shallow
Epicenter
17.950° S, 173.192° 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 usp000eq5d. 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
FROM_LOCATION
Station coverage gap
143°
Stations used
9

Nearby

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

After

  1. 4.4102 km ENE of Neiafu, Tonga · 7347 days ago · 35 km deep · 58 km away
  2. 4.786 km NE of Neiafu, Tonga · 7339 days ago · 35 km deep · 29 km away
  3. 4.740 km N of Neiafu, Tonga · 7338 days ago · 31 km deep · 91 km away
  4. 4.791 km N of Neiafu, Tonga · 7338 days ago · 32 km deep · 95 km away
  5. 4.684 km N of Neiafu, Tonga · 7338 days ago · 10 km deep · 72 km away
  6. 4.3100 km E of Neiafu, Tonga · 7337 days ago · 35 km deep · 71 km away
  7. 4.1137 km NE of Neiafu, Tonga · 7336 days ago · 35 km deep · 35 km away
  8. 4.7128 km ENE of Neiafu, Tonga · 7330 days ago · 35 km deep · 47 km away
  9. 4.7130 km NNE of Neiafu, Tonga · 7323 days ago · 10 km deep · 44 km away

Before

  1. 4.5130 km NNE of Neiafu, Tonga · 7371 days ago · 10 km deep · 56 km away
  2. 4.663 km ESE of Neiafu, Tonga · 7374 days ago · 50 km deep · 94 km away
  3. 5.264 km ESE of Neiafu, Tonga · 7376 days ago · 40 km deep · 96 km away
  4. 4.7127 km NNE of Neiafu, Tonga · 7382 days ago · 10 km deep · 39 km away
  5. 4.6123 km NNE of Neiafu, Tonga · 7384 days ago · 35 km deep · 44 km away
  6. 5.3133 km NE of Neiafu, Tonga · 7384 days ago · 35 km deep · 32 km away
  7. 4.569 km N of Neiafu, Tonga · 7390 days ago · 10 km deep · 71 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000eq5d. Read Sun, Oct 4, 2026, 11:20 PM UTC.