556 AWUS83 KBIS 191740 RWSBIS NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-200145- Regional Weather Forecast National Weather Service Bismarck ND 1140 AM CST Tue Dec 19 2017 /1040 AM MST Tue Dec 19 2017/ This Tuesday afternoon, look for partly to mostly cloudy skies across the region with chances for light snow in western and southern Montana, South Dakota, and southern Minnesota. Expect mild conditions to continue with highs from the lower 20s in northern Minnesota to the upper 40s in southern South Dakota. Measurable snow will begin to push into the region from eastern Montana beginning to this afternoon and spread eastward across the Dakotas and Minnesota Wednesday into Thursday. Very cold air is expected to pour across the region beginning late Wednesday and will continue through the Christmas holiday. $$ Hargrove