A magnitude 6.9 earthquake hit the Kermadec Islands, the northernmost group of islands in New Zealand territory, just after 7am this morning.
It was followed by a 6.3 two minutes later and a 6.2 just after 8am.
The quakes struck around 90km off the coast of Raoul Island, or just under 1000km from Whangarei, the US Geological Survey reports.
The Pacific Tsunami Warning Centre says there is currently no risk of a tsunami from the earthquakes.
Raoul Island is the northernmost inhabited outpost of New Zealand and is permanently manned.
The island is no stranger to large quakes, a magnitude 7.6 hit in July 2011 and generated a small tsunami. A 7.4 hit later that same year in October.