20 May, 2017
The storm has created headaches for travellers on highways, caused thousands of power outages and forced schools and businesses to close.
The weather service says there could be occasional rain Thursday afternoon and overnight, with a low in the 30s.
Two to six inches of snow are expected to fall in Denver through Friday.
As of 12 p.m. on Friday snow totals ranged from just a "trace" officially for Denver at DIA to more than 40 inches of snow in the foothills of Boulder County.
"It could be ugly", said Robert Koopmeiners, a weather service meteorologist.More news: Saudi Arabia counting down the seconds until Trump arrives
"Snowfall (will be) moderate to heavy at times especially in areas west of I-25 and on the higher terrain of the Palmer Divide through Friday morning", the weather service said in its warning. Many other locations picked up between two and three feet. The deepest snow was reported in the mountain towns of Allenspark and Ward south of Estes Park.
"Once this system goes through, a warming trend will begin and much of the snow will melt quickly, but temperatures will remain about 10 degrees below normal into early next week", Adamson said. All roads on the east side of Rocky Mountain National Park were closed to vehicles until further notice, including U.S. 34 from the Fall River Entrance, U.S. 36 from the Beaver Meadows Entrance and Wild Basin Road. Denver had gotten less than an inch.
Arapahoe Basin, the only ski area still open in Colorado, was reveling in a foot or more of fresh snow.
It will be mostly sunny on Saturday with a high of around 55 degrees.