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The Cheyenne Office of the National Weather Service has issued a Dense Fog Advisory for southeast Wyoming until 9 a.m. Tuesday,

The agency posted this statement on its website:

''Dense fog has developed along parts of I-80 in the Southern Laramie Range near the Summit. This includes the cities of Buford, Pumpkin Vine, and Vedauwoo. Fog has also expanded across the lower foothills and parts of western Cheyenne. A Dense Fog Advisory is in effect through 9AM Tuesday. Visibility in these areas will be reduced to a quarter mile or less at times, resulting in hazardous travel conditions. Reduce speed, use low-beam headlights and increase following distance between vehicles."