The top of the South Island and bottom of the North have been rocked by a series of earthquakes this morning. The biggest quake struck at 4.13am, measuring a magnitude 4.6, 30km north-east of St Arnaud, an alpine village south of Nelson. It struck at a depth of 7km. It was followed shortly by a 4.0 magnitude quake in the same area at 4.51 but with a depth of 21km. The same area was struck with four other lighter quakes, before a 3.2km magnitude quake struck 35km south-west of Wellington at 6.38am.

Source: New Zealand Herald April 19, 2017 19:18 UTC