Winter Weather Advisory is in effect for Winnebago, Boone, McHenry, Lake, Ogle, and Lee Counties. It is expected to expire at 10AM. An additional 1-2 inches is expected from this system, as well as blowing snow that could impair visibility.
Temperatures will fall sharply behind an arctic cold front which could also result in a flash freeze of any lingering moisture on area roadways.
Drivers are alerted to drive with caution.