there will be a lull most of the day saturday, with perhaps flurries, drizzle or sleet off and on, followed by the main event saturday night and sunday morning. i expect thundersnow once again, and with winds of 25-40 with higher gusts, a blizzard is likely. that means zero visibility and all sorts of other cool things.
by monday morning, i'd expect widespread totals of 12-20" across southern wisconsin, with a few locales reaching 2 feet. this is almost unheard of up here outside of lake-effect. in fact, it's been since the early nineties that even a foot was recorded.
snow showers will continue much of sunday and even into monday. winds will be lighter then, but strong enough to keep the roads a mess once they are cleaned.