Temperatures fell this afternoon, and the tail end of a rain system turned to snow -- prompting the city to call out the salt trucks.
At 3:40 p.m. the city announced deployment of 199 snowplows carrying loads of salt for main roads and Lake Shore Drive.
The evening rush hour could be wet and slippery, so drivers are asked to use extra caution, according to the Department of Streets and Sanitation.
The lingering snowfall is expected to bring 1-3 inches to the city and a bit less in southern suburbs, but far northern and western suburbs could see scattered areas reaching 4 to as many as 8 inches, according to WGN/Tribune meteorologist Tom Skilling.
Also this afternoon, the Illinois Tollway sent out its full fleet of 182 snowplow trucks, salting and plowing for the evening rush and beyond.
While most roads are described as clear and wet, the plunging temperatures are expected to cause icing conditions.
After some record warm temperatures the thermometer is plummeting, with highs Thursday expected to struggle to reach 15 and overnight lows into Friday that could reach below zero.
Friday will remain cold, with highs of about 14, but slight warming will return with a chance of getting above freezing again on Sunday.
Scattered snow showers could develop at any time during this cold spell, especially in the lake-effect zones of northern Indiana.
For the latest radar, conditions and forecasts go to The Chicago Weather Center.Copyright © 2015, RedEye