DENVER (AP) — A powerful spring storm is expected to bring rain followed by snow and cold temperatures to Colorado and Wyoming on Mother's Day.
The National Weather Service issued a winter storm warning for most of northern Colorado and parts of southern Wyoming for Sunday.
Up to 15 inches of snow could fall at higher elevations in Colorado. Forecasters say 4 to 9 inches could fall at lower elevations, including Denver and other cities along Colorado's Front Range.
The Weather Service warns the snow could be heavy and wet enough to snap tree limbs and power lines.
Winds gusting up to 30 mph could reduce visibility, and slushy roads could be treacherous to drive.
In southern Wyoming, the storm forced transportation officials to close a 150-mile stretch of Interstate 80 from Cheyenne to Rawlins on Sunday morning.
The Weather Service says mountainous areas in Wyoming could get a foot or more of snow, with 5 to 10 inches forecast for Cheyenne and Laramie.