Friday’s weather system brought December’s first accumulating snowfall to Chicago’s northern suburbs. The snow fell generally along and north of the I-90 corridor with accumulations of around 2” reported across Lake and McHenry counties. Officially, 0.2” fell at O’Hare airport while much of the city observed only a trace with no accumulation. Heavier snow focused on SW Wisconsin where temps hovered around freezing and a band of moderate to heavy snow persisted longer. Richland Center, about 60 miles WNW of Madison reported 8.5” as of noon Friday. By Friday evening, accumulating snow had moved east over southern Lower Michigan, but extensive cloudiness remained across a vast area of the Midwest.