Further downpours and possible thunder are expected today.
The fierce winds led Dairy Flat residents in the city's north to take to Facebook with reports of a tornado ripping through the area.
"That must have been a tornado. It sounded incredibly loud as it rushed past our place," one Facebook user wrote.
"One minute I thought the house was going to blow in from the south side, and a few seconds later I thought the north side was going to blow in. Freaky," another said.
— WeatherWatch.co.nz (@WeatherWatchNZ) June 26, 2020
Fire and Emergency NZ's Craig Dally said crews raced about the city responding to 24 calls for help in north and west Auckland from about 10pm last night.
Silverdale and Dairy Flat in north-west Auckland were hit first.
Then the heavy winds moved to Te Atatu, West Auckland and Waimauku.
"There was flooding, roofs lifting and trees and power lines down," Dally said.