NOAA has issued a Winter Weather Advisory for Colorado today and tomorrow that is calling for up to 12″ of snow.

In addition, areas of poor visibility are expected. Total snow accumulations of 
4 to 8 inches, with localized amounts up to 12 inches, are expected. 
-  NOAA Denver, CO today

This storm has perfect timing to make the Christmas/New Years holiday snowy and fun.

.A powerful Pacific jet stream combined with moisture will produce considerable 
snow and blowing snow in the northern Colorado mountains late tonight through 
Saturday night. The heavier snow will start after midnight tonight, and gradually 
spread south toward the I-70 corridor through Saturday. 
-  NOAA Denver, CO today

Winter Weather Advisory for Colorado:

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
1206 PM MST Fri Dec 22 2017

...SNOW RETURNS TO THE NORTHERN COLORADO MOUNTAINS...AND PORTIONS
OF THE PLAINS...

.A powerful Pacific jet stream combined with moisture will produce
considerable snow and blowing snow in the northern Colorado
mountains late tonight through Saturday night. The heavier snow
will start after midnight tonight, and gradually spread south
toward the I-70 corridor through Saturday. Hazardous travel
conditions can be expected for those traveling into or through the
Colorado high country. Some snow will also spread southward
across the plains late Saturday afternoon and evening, resulting
in winter travel conditions.

The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Berthoud Pass, Breckenridge,
East Slopes Mosquito Range, East Slopes Southern Gore Range,
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans,
Williams Fork Mountains, and Winter Park

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 11 PM
MST SATURDAY...

* WHAT...Snow and blowing snow expected. Plan on slippery road
  conditions. In addition, areas of poor visibility are expected.
  Total snow accumulations of 4 to 8 inches, with localized
  amounts up to 12 inches, are expected.

* WHERE...The Mountains of Summit County, the Mosquito Range,
  and the Indian Peaks.

* WHEN...From 2 AM to 11 PM MST Saturday.

* ADDITIONAL DETAILS...Winds gusting as high as 50 mph will
  cause areas of blowing and drifting snow.