Ongoing power outages are still affecting 115,000 properties in the city after supply was knocked out to over 120,000 houses, around a quarter of all Auckland homes overnight.
Roofs came off, hundreds of trees were felled and power lines were brought down across the city.
There were 1,800 calls to emergency services overnight.
A number of schools are closed today because of the weather.
4.37pm : Auckland lines company Vector says 91,000 properties are still without power.
It says 90,000 customers have been restored but there are many more to go. In some instances it could be days before power is fully restored to all customers.
"We still have 100 crew members out throughout the region restoring power. We are aware of which suburbs are experiencing widespread outages and are working through them systematically, prioritising large-scale outages, and those affecting hospitals and other essential services," Vector said in an update.
4.17pm : Residents and officials are assessing damage in National Park following yesterday's tornado. The tornado tore buildings apart, ripped doors off and knocked one house from its foundations.
Civil Defence has confirmed eight houses in the village have very serious damage, five have moderate to serious damage and one house has damage but is hapitable with repair work.
"Several of them are completely destroyed, others potentially repairable, but there are a number that may need to be demolished" Margaret Hawthorne of Civil Defence told 1 NEWS.
4.05pm : Hail has hit the capital, with temperatures plunging.
4.00pm : Wellington had a rare thunderstorm this afternoon.
3.55pm : All harbour ferry services have been cancelled in Wellington today due to adverse weather conditions.
3.48pm : A long, cold night is ahead for thousands of Aucklanders still without power
3.30pm : Auckland Transport says all train lines are operating to the published timetables after disruptions this morning.
3.25pm : Emergency Services (111) have received over 1800 calls related to the Auckland storm and are still working through a backlog of calls. Civil Defence says people's patience with Emergency Services is appreciated.
Auckland Council's contact centre has received approximately 1000 calls, the majority about fallen trees and power outages. The priority is making sure tree falls are secure. The removal clean-up work will continue over the next few days.
3.20pm : Auckland Civil Defence says Vector has reported that members of the public are taking it upon themselves to cut trees away from power poles and lines and moving downed lines fromroads and driveways. "Do not do this as it could put yourself and others at risk. Always treat downed lines as live and stay well clear," Civil Defence tweeted.
3.14pm : Civil Defence says it's expecting more rain throughout the day. There's also a weather watch for Auckland and Great Barrier for tomorrow night where some heavy rain and possibly thunder is expected.
3.09pm : Civil Defence says power outages will continue to affect many Aucklanders, potentially for a few more days. "We urge people to look out for their neighbours, check in with friends and family, and make sure they are coping ok. This is a time for us all to work together," says Director of Auckland Emergency Management, John Dragicevich.
3.02pm : Auckland Civil Defence says a few roads are closed and some public transport services were affected this morning but in most cases this has now returned to business as usual.
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