A powerful M6.6 earthquake hit 161km SSE of Ndoi Island, Fiji on May 28, 2016.
On May 27, the region was struck by another strong quake of magnitude 6.4. No tsunami alert has been issued.
The intense earthquake happened at a depth of 417 kilometers (259 miles) at 05:39 (UTC) and at a distance of 321 km from the city of Nuku’alofa (Tonga).
On May 27, 2016, the region was an earthquake of magnitude 6.4.
The eastern margin of the Australia plate is one of the most seismically 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.