A powerful earthquake has struck New Zealand’s South Island around 90 kilometres north of Christchurch.<br /><br /> A tsunami warning has been issued, calling on people on the east coast to move inland and find higher ground.<br /><br /> The 7.4 magnitude tremor, which struck just after midnight local time, was felt across a large area. <br /><br /> Power was knocked out in some areas and people rushed out into the streets – but there were no immediate reports of casualties.<br /><br /> Christchurch was devastated by an earthquake in 2011 that left 185 people dead and damaged the city centre. <br /><br /> The first wave may not be the largest. Tsunami activity will continue for several hours. #eqnz— MCDEM (@NZcivildefence) November 13, 2016<br /> <br /><br /> situation has changed – tsunami is possible. People near the coast in the south island should move to high ground or inlande #eqnz pic.twitter.com/1×2tSTubGO— MCDEM (@NZcivildefence) November 13, 2016<br />
