The quake was centred 30km west of Blenheim at a depth of 49km. Photo: Geonet
A magnitude 4.9 earthquake has shaken the top of the South Island
It was centred 30km west of Blenheim at a depth of 49km, Geonet says.
The quake struck at 10.11am and Geonet described it as moderate strength.
More than 4000 people reported feeling the tremor.