The Black Crowes have announced that this weekend’s two west coast performances will not take place. The Crowes have indicated that the shows scheduled for Las Vegas on Saturday and Santa Cruz on Sunday have been cancelled due to ‘an unexpected illness within the band. ‘ While the Santa Cruz date will not be rescheduled, tickets for the Vegas gig will be honored once a new date is announced. At present, the group’s Mesa, AZ performance slated to take place on Tuesday at the Ikeda Theatre is a go.