probably Christchurch. Have a crack at geonet.org.nz. And make sure your preparations are up to date, including some gardening gloves, and keep your slippers by your bed, as bare feet and glass will...
About 14 000 earthquakes are recorded in New Zealand each year. Many of these are not felt, including some of the largest, which are deep ones occurring in the sparsely populated region of Fiordland.