* WHAT...Snow expected. Total snow accumulations between 8 and 14 inches from mile post 150 to Paxson and between 12 and 20 inches from Paxson north to mile post 200. * WHERE...Northern Copper Valley, including the eastern Denali Highway and Paxson. * WHEN...Until 4 AM AKDT Wednesday. * IMPACTS...Travel could be difficult. Be prepared for slippery roads.