A magnitude 4 earthquake struck Canterbury at 9:10pm on Sunday night.
The quake hit 10km east of Christchurch at a depth of 12km.
In just 15 minutes, more than 7600 people reported feeling it.
Many saying it felt "much stronger" than a magnitude 4 shake.
"Holy guacamole!! Felt WAAAY bigger! Something you could never get use to," one user wrote on Twitter.
The quake hit exactly nine years after the 2009 7.8 magnitude Dusky Sound earthquake, almost to the minute.
Newshub.
