The Powerball jackpot has grown to an eye-watering $30 million after nobody won the big prize in tonight's draw.

A Lotto player who bought a ticket in Auckland won $1 million on Lotto's First Division, but the $27 million Powerball prize went unclaimed.

The last time the jackpot was over $30 million was almost three years ago, when a self-proclaimed Auckland 'Westie' took home $33 million to become the country's largest-ever individual Powerball winner.

If the prize continues to roll over, a must-win draw will be called at $40 million.

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Lotto NZ chief executive Wayne Pickup said the Powerball jackpot "could be won at any time".

Tonight's winning First Division ticket was sold at Victoria Park New World in Auckland.

Strike Four was also won by a player who took home $138,389. The winning Strike ticket was sold at Papakura Photo Image.