November 20, 2015 6:00 am Calm Before Snowstorm A Winter Storm Warning was issued for the entire metro Chicago area that will go into effect Friday night. NBC 5’s Andy Avalos has the full weekend forecast. Local 1:44 CHICAGO FORECAST: Storms impact region ahead of weekend cooldown 2:25 Thursday afternoon forecast 3:05 Thursday morning weather 2:16 Wednesday afternoon forecast 3:03 Wednesday morning weather