DENVER (AP) -- Snow is starting to fall in parts of central and western Wyoming, and forecasts for snow and high winds have parts of Colorado bracing for snowdrifts of 2 to 3 feet through Tuesday night.
The National Weather Service says the spring storm could bring 6 to 11 inches of snow through Tuesday in some areas, including Denver International Airport.
The temperature at the airport was 70 degrees at midday Monday before the storm arrived.
In Wyoming, a winter storm warning includes the cities of Cheyenne, Laramie, Rock Springs, Casper, Rawlins, Riverton and Lander.
The storm could help boost mountain snowpack, which is crucial to providing water through the summer. Colorado's snowpack was at 69 percent of average Monday, and Wyoming's snowpack was 77 percent of normal.