As of 9 a.m. Sunday, the Wyoming Department of Transportation [WYDOT] had posted a "no unnecessary travel" warning on Interstate 25 between Glendo and Horse Ranch Creek Road in the Casper area.

Other sections of  I-25 and I-80 were open, but travel conditions were generally poor, with slick conditions and snowfall reported just about everywhere.

Many areas also reported blowing and drifting snow and poor visibility. You can access the WYDOT Road and Travel report here.