Regina's McMorris qualified third in the second heat with a score of 95.75, while Toutant of L'Assomption, Que., landed a 91.00 to finish fifth.
Parrot of Bromont, Que., finished atop the first heat with a best-run score of 92.50, which he put down on his second attempt.
The top six competitors in each group earned a spot in the final.
Despite landing a pair of 1440s, Tyler Nicholson of North Bay, Ont., was awarded 89.25 for his best jump, leaving him short of Billy Morgan of Great Britain, who grabbed the sixth spot in the second heat at 90.50.
American teen Redmond Gerard, who won the slopestyle event on Feb. 11, qualified sixth in the first heat with an 85.00.