Trees blown over in high winds
NorthPower had restored power to all but 1000 customers who were cut off in Whangarei and Kaipara after the storm.
Spokeswoman for Northland Civil Defence Emergency Management (NCDEM) Group Claire Nyberg said the power outages continued to affect sewage systems, telecommunications and drinking water in some areas.
However, there had been no requests for assistance with food or water at this stage.
Ms Nyberg urged people not to travel on roads unless necessary.
"The length and changeable nature of the weather event is making it difficult to accurately capture in real-time exactly which Northland roads and highways are open or affected," she said.
State Highway 1 at Moerewa, State Highway 12 west of Kaikohe and North of Dargaville, and State Highway 11 at Lemons Hill, Kawakawa were all flooded and motorists were warned to take caution.
The Northland District health Board has issues a warning to stay out of waterways, floodwaters and harbours across the entire region to avoid contact with contaminated water.
People who have been without power have also been warned to throw out thawed food rather than re-freezing it.
Watch:
Wild weather in Northland
Vector crews have restored power to all but 383 Auckland region customers who were affected by the storm.
Hot water has been cut to some areas after trees and debris damaged lines.
MetService says the heavy rain will continue in Northland until Saturday with a further 100mm to 160mm of rain expected to fall in the Far North and eastern parts of Northland.
The strong winds will remain, with gusts of up to 100km/h forecast in Auckland and Northland until Saturday morning when they will ease, according to MetService.
Watch:
Wild weather hits Auckland
Forecast for the main centres
Whangarei: Rain tomorrow, possibly heavy in the evening and gusts of up to 100 km/h in exposed places. Saturday heavy rain and winds turning westerly and easing.
Auckland: Occasional rain tomorrow with gusty northeasterlies. Heavy rain on Saturday and winds turn westerly.
Hamilton: Cloudy with chance of light rain tomorrow. Rain will develop from Saturday morning and the wind will die out.
Tauranga: Drizzly rain will develop by night tomorrow. Fresh northeasterlies. Rain will develop on Saturday.
Wellington: Tomorrow will be fine with high cloud and light winds. Northerly winds on Saturday with some rain developing.
Christchurch: High cloud tomorrow and a chance of rain. Strong northeasterlies will ease on Saturday.
Dunedin: High cloud with a few spot of rain tomorrow. Saturday will become fine with strong northeasterly winds.