Christchurch was hit by a strong, shallow earthquake just after 11.30pm last night.
According to GeoNet, the 4.6-magnitude quake was centred 10km south-west of the city, at a depth of 8km.
As is traditional, Twitter blew up.
Oh now I see the irony of having @onedirection 's song 'rock me' stuck in my head all day... @NiallOfficial @Real_Liam_Payne #eqnz #chch
— Nicole (@nvesmith) November 18, 2013
that was loud! i fell over in the shower! #eqnz #pleasequotemeinthepress
— Brian Feary (@BrianFeary) November 18, 2013
Can you OD on rescue remedy? I'm giving it a good go anyway @nicolagrigg @KerreWoodham #eqnz
— Katie Duncan (@katfdunc) November 18, 2013