And the quake was felt as far away as Auckland and Invercargill, although the shaking in those centres was described as 'light'.
Fire and Emergency says no damage has been reported.
A shallow quake for Christchurch just now. The M3.5, 9km depth quake was felt right across the city. Over 4000 of you have already submitted felt reports #eqnzpic.twitter.com/7LDE0d1rCx