As mentioned in the Chicago Tribune article below, it is highly unlikely that snow plows will be able to keep up with the anticipated downfall. Be extremely cautious driving and walking on the streets during this event!
National Weather Service - Watches, Warnings & Advisories
National Weather Service - Chicago Area Forecast
Chicago Tribune Article
Forecast: 'Potentially life-threatening' blizzard
The National Weather Service has issued an unusually dire blizzard watch, calling a storm expected to arrive Tuesday afternoon over much of northern Illinois and Northwest Indiana "dangerous, multifaceted and potentially life-threatening."
All told, forecasters expect at least a foot of snow over much of the watch area. White-out conditions are expected at times Tuesday night, with snowfall rates of at least 2 to 3 inches per hour possible with northeast winds of 25 to 40 mph and even stronger gusts.
Localized totals in excess of 18 inches are possible.
Conditions are expected to deteriorate from north to south across the region Tuesday afternoon with travel becoming "virtually impossible" at times Tuesday night into early Wednesday morning, according to the weather service. Plows will be unable to keep up with the downfall.