[1] He was the father of the musician and philologist Hans Marius Stormoen.
[2][3] Stormoen made his stage debut at the National Theater in Bergen in 1934, and his breakthrough came in 1935, as Vingrisen in Nordahl Grieg's play Vår ære og vår makt.
He performed at the National Theater until it was damaged in a bombing raid in June 1940.
Later in World War II he joined the Norwegian Armed Forces in exile in the United Kingdom.
From 1949 onward he toured with the National Traveling Theater, eventually also as a stage director for many years.