Engineers have been assessing the damage to Christchurch's CBD after this morning's rash of aftershocks.
A 5.3 magnitude quake hit at 3.04am and was centred in Rolleston, 20 km west of Christchurch, at a depth of just over 14 kilometres.
Two further aftershocks were recorded after the 3.04am one today, a 3.4 at 6.06am and a 4.1 at 9.09am. Both quakes were shallow.
Canterbury Earthquake Recovery Authority (CERA) spokeswoman Catherine Delore says they have seven indicator buildings in the CBD which are being closely monitored for damage. She said some of their cracks were wider after this morning's quakes.
She said the Hotel Grand Chancellor has not sustained any more structural damage.
The 5.3 quake was felt as far away as Greymouth and Dunedin.
Christchurch residents contacted tvnz.co.nz with their experiences from the latest shake.
Theupbeats said: "It was brutal! And really long this time round although I didnt hesistate to get up as these are just the norm! But it's enough to make ya think what the hell am I still doing here!"
JoGee described the quake as violent. "It seemed to last a long time, but I decided I was safer in bed, on getting up I found objects toppled, on the floor etc. Does make you wonder how much more and why we stay."
GeoNet says the shake was the eighth biggest since the September 4 earthquake and the fourth biggest since the devastating February 22 one.
Seismologists say the size of the quake means some homes may have received minor damage.
Police told ONE News that spent the morning checking on properties with alarms that went off.
A Southern Communications spokesperson said they have had no reports of injuries or damage.
Christchurch Newstalk ZB chief reporter Jo Scott said the quake was a long, rolling one that knocked items off shelves in homes around the city.
She said there was no visible change to the quake-damaged Hotel
Grand Chancellor. The 26-storey building is still on a lean
Power remained on throughout the tremor.
ONE News reporter Charlotte Bellis told TV ONE's Breakfast that the 5.3 shake measured 6 on the Mercalli scale which measures ground shaking. That means it would have been difficult to stand, there would be cracks in plaster and furniture could have overturned.
This morning's 5.3 shake was also the 25th earthquake Christchurch has had measuring five or more on the Richter scale in the past six months.
Meanwhile, detailed new footage taken within Christchurch's Red Zone area has been released.
The video was taken by Terralink International for Civil Defence last month. Terralink's StreetCam vehicle spent two days in early April taking imagery of every accessible area.
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