The first significant snowstorm of the season is set to impact southern Minnesota beginning Tuesday, prompting the National Weather Service to issue a winter storm warning for dozens of counties, including the entire 7-county metro area.
Snow is expected to develop from southwest to northeast through the day Tuesday, reaching the Twin Cities later in evening. The heaviest snow will fall overnight, with the storm moving out of the area by midday Wednesday.
Snow totals could range anywhere from 4-8 inches in the most of the warned counties, although isolated totals could go higher. The latest snowfall forecast from the National Weather Service suggests 9 inches could accumulate in the metro area.
Winds will also be picking up and gusting 30-40 mph on Tuesday night, causing blowing and drifting. Travel conditions will quickly become hazardous, especially in open areas of western and southern Minnesota where blowing and drifting is more common.
Areas shaded in pink in the map below are in the winter storm waring, with the blue-shaded counties under a winter storm watch.
The Monday afternoon NAM weather model simulation shows snow pushing through exactly as the weather service describes, with it completely out of Minnesota by midday Wednesday.