GeoNet says a 'severe' magnitude 5.5 earthquake has rattled central New Zealand this afternoon.
Nearly 7,000 people reported feeling it on the GeoNet website.
The quake struck at 4.15pm at a depth of 12km.
Fire service says there have been no reports of any damage so far.
It was centred 10km east of Seddon.
Seddon Supervalue worker Kevi Kumat says the quake shook for around 10 seconds, and certainly wasn't as bad as the big one three weeks ago.
Everything rattled, but no stock fell off the shelves, and no other damage, he said.