ALERTS: Several inches of snow will accumulate this weekend, beginning Friday night. Winter storm alerts have been issued in advance of this system, which will also go into effect Friday night. Jo Daviess, Stephenson, Carroll, and Whiteside Counties are under a Winter Storm Warning, while remaining counties are under a Winter Storm Watch for now. Upgrades to a warning are likely by Friday morning.
TIMELINE: Nearly all of Friday will end up dry, but light snow will begin around or shortly after midnight. Slowly, snow will become heavier through the morning of Saturday. By afternoon and evening, snowfall rates will be approaching 1" per hour at times. Steady snow will continue through Saturday night but slowly wind down through Sunday morning. Wind will then pick up a bit Sunday behind this system, allowing for some degree of blowing and drifting.
TOTALS: Snow accumulations will reach 6-10 inches for most of the area, well into winter storm warning criteria. Much of that will come down between midday and evening on Saturday, so travel is not advised during that time. There is a little uncertainty with the Northern edge of the snow totals, as even a subtle shift Southward may keep some of our Northern counties on the lower side of the range. But point being, travel will be very difficult to nearly impossible Saturday afternoon and evening. Snow winds down Sunday but blowing and drifting may remain a concern into the afternoon and evening.
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