Officials say a strong storm system will dump up to 18 inches of snow in the Colorado mountains.
The National Weather Service said a winter storm warning will be issued Wednesday night and continue through Thursday. The heaviest snowfall is expected to be just along and east of the Continental Divide, especially in Larimer County.
Total accumulations there could reach one and a half feet by Thursday night.
Arapahoe Basin is the only Colorado ski resort still open. It had planned to close June 5, but it now plans to run its lifts for two more weekends, June 10 to 12 and June 17 to 19. The chief operating officer says it's too early to say what will happen after that.
Statewide, Colorado's snowpack is at 167 percent of average.