Photo: Blake Armstrong/Photosport Ltd 2021
The Storm outscored the Otago Spirit 26-3 in the second-half, having held a slender 13-12 lead at halftime.
Auckland crossed for five tries, with first-five Ruahei Demant kicking four conversions and two penalties.
The bonus point win lifts the Storm a point clear of defending champions Canterbury in the premiership standings.
Auckland have a bye next week before hosting Canterbury at Eden Park in a fortnight.
Biggar kicks Lions to first test win
Dan Biggar's boot proved the difference as the British & Irish Lions came from behind to beat South Africa 22-17 in an attritional first test in Cape Town.