When it is all said and done...

Update 4am = The back edge of the snow is just about to move through the region. The snow that is still over the area is very light, and not much more is expected to accumulate. Road conditions were still pretty poor when I came into work. The worst areas will be the side streets and rural roadways this morning. The main arteries will continue to improve as the morning commute wears on.

Update 10:30pm = The reports that I have seen across the viewing area have ranged between 3 and 5 inches. I have left the original snowfall forecast up. As you can see from around Interstate 88 and points northward, 6 inches of snow looks likely. A few spots may fluff up slightly more, but the intensity of this storm system is starting to wane. With snowplows running all night, your morning commute should not be all that bad. I will be back in the weather center before 4am with another update if it is warranted... ADAM

The graphic to the left illustrates what you can expect to see on the ground when this storm system is all said and done. It should be completely through the region before sunrise Tuesday. This is NOT a forecast of additional snowfall. If you haven't touched a shovel yet, this is what you will end up shoveling tomorrow. The majority of the viewing area will fall in the 3 to 6 inch range. You can see a thin band in southern Wisconsin where the powder could fluff up to 8 inches. With the atmosphere so cold the snow doesn't compact as much. Remember that 10 to 1 ratio? 10 inches of snow to 1 inch of liquid? The ratio with this snowmaker is going to be closer to 20 to 1! Most observations sites have reported less than a tenth of an inch of liquid precipitation, but most areas already have a couple of inches on the ground. Please reply to this post and report your snowfall totals! -ADAM