Tonga earthquakes

M4.3 earthquake 149 km SSW of Hihifo, Tonga

A magnitude 4.3 earthquake struck 149 km SSW of Hihifo, Tonga on Tue, Oct 21, 2008, 7:35 AM GMT-12 (19:35 UTC), 229 km (142 mi) below the surface.

A larger quake followed: M5.7 152 km NNW of Neiafu, Tonga. This one was a foreshock.

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

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The earthquake

Magnitude
4.3 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2008-10-21 19:35:55 UTC
Depth
229.3 km (142.5 mi), intermediate-depth
Epicenter
17.099° S, 174.532° 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 usp000gkry. 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.

Station coverage gap
86°
Stations used
35

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 5.7152 km NNW of Neiafu, Tonga · 6542 days ago · 188 km deep · 31 km away
  2. 4.4165 km SSW of Hihifo, Tonga · 6541 days ago · 238 km deep · 16 km away
  3. 3.6Tonga · 6541 days ago · 312 km deep · 48 km away
  4. 3.4151 km NNW of Neiafu, Tonga · 6538 days ago · 150 km deep · 31 km away
  5. 4.2154 km SSW of Hihifo, Tonga · 6538 days ago · 223 km deep · 9 km away
  6. 4.5158 km SW of Hihifo, Tonga · 6529 days ago · 227 km deep · 28 km away
  7. 4.077 km S of Hihifo, Tonga · 6521 days ago · 85 km deep · 94 km away
  8. 4.4Tonga · 6520 days ago · 131 km deep · 78 km away
  9. 4.499 km SSW of Hihifo, Tonga · 6513 days ago · 104 km deep · 56 km away
  10. 3.5124 km SW of Hihifo, Tonga · 6509 days ago · 185 km deep · 48 km away
  11. 3.6160 km NW of Neiafu, Tonga · 6504 days ago · 304 km deep · 80 km away
  12. 3.859 km SSW of Hihifo, Tonga · 6502 days ago · 77 km deep · 90 km away
  13. 4.881 km SW of Hihifo, Tonga · 6501 days ago · 140 km deep · 72 km away

Before

  1. 4.5142 km NW of Neiafu, Tonga · 6561 days ago · 93 km deep · 65 km away
  2. 4.696 km NNW of Neiafu, Tonga · 6565 days ago · 13 km deep · 86 km away
  3. 4.0124 km NNW of Neiafu, Tonga · 6579 days ago · 114 km deep · 58 km away
  4. 4.3138 km SSW of Hihifo, Tonga · 6584 days ago · 89 km deep · 26 km away
  5. 4.7159 km NNW of Neiafu, Tonga · 6585 days ago · 108 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000gkry. Read Sat, Oct 3, 2026, 3:20 PM UTC.