M 6.0 - 164km WNW of Hihifo, Tonga showing the astonishing historic seismicity credit USGS
A magnitude 6.0 - 164km WNW of Hihifo, Tonga is the 3rd major quake of December and the 134th of 2019.
According to USGS, 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.