Tonga earthquakes

M4.9 earthquake 35 km NNW of Kolonga, Tonga

A magnitude 4.9 earthquake struck 35 km NNW of Kolonga, Tonga on Mon, Jan 22, 2007, 2:31 AM GMT+13 (13:31 UTC), 33 km (20 mi) below the surface.

A larger quake followed: M5.8 74 km NW of Nuku‘alofa, 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
4.9 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2007-01-21 13:31:41 UTC
Depth
32.5 km (20.2 mi), shallow
Epicenter
20.822° S, 175.133° W
Region
Tonga
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

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

Felt at Nuku`alofa.

From the USGS event page for usp000f34z. 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
CONSTRAINED_BY_DEPTH_PHASES
Station coverage gap
55°
Stations used
48

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 9 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.464 km ENE of ‘Ohonua, Tonga · 7188 days ago · 10 km deep · 85 km away
  2. 5.874 km NW of Nuku‘alofa, Tonga · 7181 days ago · 10 km deep · 59 km away
  3. 5.559 km NNW of Nuku‘alofa, Tonga · 7181 days ago · 15 km deep · 40 km away
  4. 5.558 km NNW of Nuku‘alofa, Tonga · 7181 days ago · 15 km deep · 39 km away
  5. 4.930 km NE of ‘Ohonua, Tonga · 7178 days ago · 10 km deep · 56 km away
  6. 4.7113 km NW of Nuku‘alofa, Tonga · 7172 days ago · 15 km deep · 93 km away
  7. 4.853 km NNW of Nuku‘alofa, Tonga · 7160 days ago · 69 km deep · 38 km away
  8. 4.655 km ENE of ‘Ohonua, Tonga · 7151 days ago · 70 km deep · 86 km away
  9. 4.953 km ENE of ‘Ohonua, Tonga · 7146 days ago · 35 km deep · 81 km away

Before

  1. 5.177 km ENE of Kolonga, Tonga · 7211 days ago · 33 km deep · 77 km away
  2. 4.551 km ENE of ‘Ohonua, Tonga · 7216 days ago · 35 km deep · 81 km away
  3. 4.573 km NE of ‘Ohonua, Tonga · 7217 days ago · 10 km deep · 80 km away
  4. 4.4Tonga · 7221 days ago · 35 km deep · 87 km away
  5. 4.785 km S of Pangai, Tonga · 7224 days ago · 15 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000f34z. Read Sun, Oct 4, 2026, 4:35 PM UTC.