Magnitude-7.1 earthquake hits Tonga, tsunami threat issued
A magnitude-7.1 earthquake has hit near Tonga, prompting a tsunami warning for the Pacific island country. Geoscience Australia said the quake struck about 100 kilometres north-east of Tonga. The US Geological Survey says it hit at a depth of 10 kilometres. The US Tsunami Warning Centre advises that tsunami waves are possible for coasts located…