WYDOT video outlining the expected impacts says some areas will see snowfall of up to a couple of inches an hour and warns that travel on Interstate 80 and possibly I-25 as well could be impacted:

According to the video, travel conditions through most of the day today [March 4] should be favorable, with winter weather arriving around 4p.m. today. The heaviest snow is likely to be tonight and into Saturday morning, with light snow and cold weather contibuing through the weekend.

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