Mere months after it was raucously inaugurated by Disturbed, Korn, Sevendust, and In This Moment, the million-dollar Illusions Theatre ? designed and billed as a more “intimate” space within the Alamodome ? is at risk for natural disaster: The Avalanche Tour, which blows into town this Friday with high-voltage acts Stone Sour, Theory of a Deadman, Skillet, Halestorm, and Art of Dying in tow, promises a sudden rapid flow of earth-shattering sound ? no snow required. $35-$45, 6pm, Illusions Theatre, Alamodome, 100 Montana, (800) 745-3000, ticketmaster.com.