Snow returning late today... This is a special weather statement from the National Weather Service Office in Riverton. * WHAT...Periods of snow. Accumulations of 1 to 3 inches. Wind gusting as high as 35 mph. * WHERE...Casper Mountain. * WHEN...Late today into tonight. * ADDITIONAL DETAILS...Roads may become slick and snow covered, including Interstate 80. Visibility may become reduced in areas of blowing snow.