Portions of northern Illinois now under a Winter Storm Warning

As previously discussed, the placement of the front-enhanced snowband was going to be key into highest impacts and snowfall totals...

With it setting up over extreme northern Illinois, Winnebago, Boone, McHenry, Stephenson, Ogle, Carroll, and Jo-Daviess County have been upgraded to a WINTER STORM WARNING! 

Same expiration time, 4PM this afternoon! Whiteside County has been placed under a WINTER WEATHER ADVISORY!