Scott Olson/Getty Images
CHICAGO — Cook County is under a winter storm warning until 6 p.m., the National Weather Service said.
As much as 5 to 10 inches of snow could accumulate this afternoon and evening, the warning said. Snowfall could snarl traffic and create delays at Midway and O'Hare airports.
The warning predicts 15-30 mph winds coming from the northwest.
Extreme cold temperatures are expected in the coming days, with windchills dipping to -45 degrees Sunday.
The Chicago Department of Aviation said more than 180 flights had been canceled at O'Hare, and Midway was experiencing "minor" delays, canceling about a dozen flights.
