The Nation Weather Service have issued a Blizzard Warning.

Blizzard Warning
Conditions will continue to deteriorate throughout the day, and travel will get harder.
Extreme winds have the potential for creating whiteout conditions causing zero visibility.
Please keep off the roads, if possible, to keep yourself safe, and to allow emergency crews and plows to do their work unhindered.
Stay home, and if you cannot stay home, stay safe out there… and come home as early as you can manage.
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“Blizzard Warning in Effect, Travel Not Recommended”
A winter storm centered over southeastern Colorado will rapidly
intensify this morning. This will produce very strong winds and
areas of heavy snow. Rain will change to snow along the Front
Range this morning, with blizzard conditions developing quickly
in the late morning or early afternoon. These conditions will
spread eastward across the plains this afternoon. Near zero
visibilities are expected with wind gusts of up to 80 mph and up
to a foot of snow on the plains east of a line from Greeley to
Denver International Airport. In areas closer to the mountains,
there will be less snow, but a period of very heavy snow and
strong winds is likely during the day today that will likely
create near blizzard conditions for a while. Strong winds will
continue to create blizzard conditions on the plains overnight
tonight. Closer to the mountains, there will be some improvement
but still enough wind for some drifting snow and continued
difficult travel.
Much of the northern Colorado mountains will also see heavy snow
and windy conditions today, especially near the Wyoming border.
Travelers across the Colorado mountains and eastern plains should
consider canceling travel plans today, as conditions will
deteriorate quickly during the late morning or early afternoon. Be
aware that if you go somewhere this morning, you could become
stranded or have a very difficult time returning this afternoon.
Road closures can be expected, especially on the eastern plains
and near the Wyoming border, but possibly also along the I-25
corridor during the peak of the storm later today. Residents
should also be prepared for power outages from the very strong
winds.