Born in Bergen on 10 May 1955, Stormoen is a son of actress Elna Kimmestad, and actor and theatre director Kjell Stormoen. [1 ] He had his stage debut in 1978, in the musical Godspell in the Grieg Hall.
Stormoen was educated as an engraver, but also participated in the dramatic society Bergens Dramatiske Klubb. He was a scenographer at the Trøndelag Teater from 1945 to 1948.