Nearly 10,000 people have reported feeling the quake.
It struck 35 kilometres north of New Plymouth.
Even the Prime Minister was shaken by the 5.8 magnitude earthquake.
It's the strongest of dozens of aftershocks felt after the 5.8-mag tremor this morning.
It had a depth of 117km.
It hit at only 5km deep.
The shaking was described as "light".
It hit just before 5am.