Much of the Chicago area is experiencing a bit of a lull in the snowfall at 9:30AM. However, the latest computer model guidance indicates that heavier snow squalls will return this afternoon, especially to areas east of the Tri-State Tollway (I-294).
Winds at 2000 to 5000 feet, which help draw moisture from Lake Michigan, are forecast to strengthen from 15mph at 9AM, to 40mph by 6PM this evening. As winds increase aloft, snow squall intensity and coverage should also escalate.
Here is a breakdown of how much snow you can anticipate, including the latest warnings and advisories.
Lake Effect Snow Advisory for Cook County and the City of Chicago. Communities east of the Tri-State Tollway (I-294), including the downtown Chicago, can expect 3″ to 5″. West of I-294 (in Cook County), 1″ to 3″ of snow.
Lake Effect Snow Warning for Lake(IN), Porter(IN), LaPorte(IN) and Berrien(MI) Counties from Noon Today until Noon Thursday. Total accumulation of 4″ to 12″ by Noon Thursday.
Lake Effect Snow Advisory for Jasper and Pulaski Counties in Northern Indiana. Total accumulation of 2″ to 6″ by Noon Thursday
1″ to 3″ of Snow (but no advisory) for sections of Lake County and Will County in Ilinois. In Lake County, the heaviest accumulation will occur east of the Tri-State Tollway (I-294). In Will County, the heaviest accumulation is expected east of I-57, or over the eastern half of the County.
White: Winter Weather Advisory/Lake Effect Snow Advisory
Yellow: Winter Storm Watch
Red: Winter Storm Warning/Lake Effect Snow Warning