I've been looking into this recently and it is pretty clear that the global ski industry is getting hit hard by warming temperatures. Several World Cup events have been cancelled this year, the most recent was in Val D'Isere. This is a resort with terrain above 10,000 feet, similar to most of the Utah resorts. It's not only hitting the resorts but also retailers. Hardgoods sales are particularly vulnerable.
The Ski Industry has formed a non-profit to address this issue called Keep Winter Cool. They have this NASA Photo that illustrates our predicament nicely.
This seems to be a key issue impacting bot the ski industry and the outdoor industry. Perhaps its time to cross borders and start working together on this. Right now it seems as though the only folks supporting this are the National Ski Areas Association and the Natural Resources Defence Council.