winds have gusted as high as 40 so far, could see gusts to 50 overnight as thunderstorms/heavy precip bring down stronger winds from aloft (as high as 80 mph just above the surface). blizzard conditions have certainly verified even at this early hour.
8-12" looks good for tonight.
then the storm will stall to our south, producing several more rounds of snow sunday afternoon through monday. i'd expect another 3-6" during this period, bringing totals across all of southern wisconsin to 18-24".
i believe ~21" is the most madison has ever seen in a snowstorm (and like this one, it was spread over a few days). i'll check back on that, but obviously you'll be hearing about it if we break it.