Two weather systems along with lake effect and lake enhancement will result in rounds of snow for south central and southeast Wisconsin today through Wednesday.The first round of snow will be caused by a weaker area of low pressure located aloft, which will continue to bring a steady snow to southern Wisconsin through tonight. The snow will be occasionally moderate to heavy this afternoon and evening in south central Wisconsin. The first round of snow will result in a widespread 5 to 7 inch snowfall across the region. In addition, east winds will turn to the northeast and increase tonight. This will result in heavier lake effect snow showers and lake enhanced snowfall in portions of southeast and east central Wisconsin.A second much stronger area of low pressure will develop in the southern Plains tonight and track northeast into the mid-Mississippi Valley region by Tuesday evening, and into the northern Ohio Valley by Wednesday morning. This track places much of southern Wisconsin in a swath of heavy snow that would fall later Tuesday into early Wednesday morning. An additional 8 to 15 inches is possible south of a Sheboygan to Madison to Mineral Point line...with another 4 to 8 inches north of there.In addition, strong north to northeast winds of 25 to 40 mph with gusts to 55 mph will result in severe blowing and drifting across southeast Wisconsin and blizzard conditions Tuesday night into Wednesday.