Earthquake Information

October 21, 2011 (17:57:16 UTC)

Quake Location

Magnitude 7.4 Kermadec Islands Region

A major earthquake occurred near the Kermadec Trench about 1215 km (754 miles) northeast of Auckland, New Zealand. This region of the Tonga-Kermadec subduction zone experiences reasonably high levels of seismic activity, with nearly 50 events of M 6.5 and above over the past 38 years, and 5 greater than M 7.5.

Teachable Moment

Teachable Moment Presentation

Animations and Visualizations

  • USArray Ground Motion Visualization (mpeg-4 11.4 MB)
  • Back Projection (mpeg-4 79.4 kB)

En Español

 USGS Resources

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