A quake of 4.5 magnitude shook Wellington this evening.
It struck 20 km northwest of the city, at a depth of 40km.
There are no reports yet of any damage, though it could be felt from as far as Blenheim.
Staff in the TV3 newsroom in the capital said it was strong enough to make them jump under their desks.
On the 3 News Facebook page, Taryn Ibell wrote: "Slow shaking for bout 20 seconds then bout 10 seconds of violent shaking, then back to slow shaking as it rolled away."
James Anderson wrote: "I think I shat my pants!!"
Sam Pradeep emailed 3 News, saying: "It was bit violent, but short lived. Now i can feel what Cantabrians would have gone through last week."
Others have asked whether 'Moon Man' Ken Ring predicted it.
Send any pictures or stories to noles@tv3.co.nz.
Half an hour after the Wellington shake, Christchurch was hit with another aftershock measuring 4.6.
3 News