M7.9 earthquake in Tonga

This falls under the category of “when it rains, it pours”. A M7.9 earthquake struck today in the Tongan arc. It doesn’t appear to be related to the Hunga Tonga Hunga Ha’apai eruption as it occurred a few hundred kilometers to the SSE of the volcano (remember folks, correlation does not mean causation). The earthquake looks like it was relatively shallow in the crust – ~10 km. All these events will definitely make life even more complicated for the people on Nuku’alofa (Tongatapu), but no word of damage/effects on the Tongan island. A tsunami advisory was also issued for Hawai’i and other spots around the Pacific Basin.

{Hat tip to my officemate Tatia for announcing the earthquake to us as it happened.}


  1. #1 sdelgh
    March 23, 2009

    Do earthquakes or activity thats been going on around the Tongan islands this past week, damage the coral, sea life on the ocean floor?

  2. #2 Dean
    May 19, 2009

    What could be a possible effect of earthquake to the crops grown in Tonga?

  3. #3 Faustino Kaper
    December 12, 2010

    I’m still learning from you, as I’m trying to achieve my goals. I definitely liked reading all that is posted on your website.Keep the stories coming. I loved it

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