Epicenter on the tip of the south Island on Cook Straights.
My niece is in Dunedin studying, Andrew is of course in Christchurch both on South Island.
There could be interruption in communications, with some okay but unable to email, etc.
So best to get out news from newsreels and not swamp Andrew with personal emails until be know general situation, first look seems less structural damage, compared with the Christchurch devastation in recent quakes.