After a 7.6 earthquake earlier in Samoa, at 18.00 UTC another 6.8 one was measured 66 miles ENE of Hihfo, Tonga, 132 miles SW of Apia, Samoa, or 164 miles WSW of Tafuna, American Samoa.
The good news is, so far there are no report of injury or destruction.
The eastern margin of the Australia plate is one of the most sesimically active areas of the world due to high rates of convergence between the Australia and Pacific plates. In the region of New Zealand, the 3000 km long Australia-Pacific plate boundary extends from south of Macquarie Island to the southern Kermadec Island chain. It includes an oceanic transform (the Macquarie Ridge), two oppositely verging subduction zones (Puysegur and Hikurangi), and a transpressive continental transform, the Alpine Fault through South Island, New Zealand.
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