City of Las Vegas issued the following announcement on Dec. 11.
The Virtual Tree Lighting for this evening has been postponed till further notice. High winds today, knocked the tree down and will need to be replaced. At that time, the virtual tree lighting will be rescheduled.
We apologize for the inconvenience. If you have any questions, please contact Chuck Griego, City of Las Vegas Event Planner/Film Liaison at 505-454-1401 x1604 or 505-429-1298.
Original source can be found here.