Residents shared where they felt the earthquake on Facebook. "Couch was wobbling in Taradale," Kris Blank said.
"Definitely felt it in Greenmeadows," Robert Nunziante said.
"Pretty big in Waipukurau," Susan Hart said.
Kylie Brown said her whole house moved in Havelock North.
People in Palmerston North have reported on social media feeling the quake.
Raewyn Hastie said it felt like a "good jolt" in Waipukurau.
The earthquake was at a depth of 17km and located 15km southeast of Porangahau.
Another, smaller, earthquake, of magnitude 2.3, has occurred.
It struck at 6.20pm. It followed a moderate earthquake in the vicinity at 5.17pm and a light one at 6.19pm.
Porangahau is on the east coast of the North Island, east of Dannevirke.
More than 1000 people already have responded to Geonet stating what the earthquake felt like. Most said it felt weak. Seven considered it was strong, and three, extreme.
The earthquake was felt from Napier to Waipukurau.
More to come.