Update 10:45AM CDT…
Heaviest lake-effect snow continues over the southern portion of Chicago into the western portion of Lake County, Indiana. In Lansing the visibility came up for a period of time, but in the last half-hour or so has lowered back to a quarter-mile, indicating heavy snowfall once again. In general this band of snow is showing signs of weakening somewhat as it drifts slowly south and east.
To the north, the plume of snow continues to hang along the Wisconsin shoreline and seems to be strengthening slightly as it moves slowly south along the Lake County, Illinois shoreline. Snow associated with this plume has moved into the Waukegan area where visibility has dropped to a quarter-mile indicating heavy snow. During the past hour moderate snow has been reported at Kenosha and heavy snow (one-quarter-mile visibility) at Racine.
CHICAGO — The Metro weather radar mosaic below gives a perfect picture of current snowfall positioning across the Chicago area. Heaviest snow is falling over the south portion of Chicago, edging into the northwest corner of Lake County Indiana. The lowest visibility reported at 8AM CDT was a quarter-mile in heavy snow at the Lansing airport with 1/2-mile visibility and moderate snow at Midway Airport.
Note on the radar mosaic, the next narrow plume of lake-effect snow working its way south along the Wisconsin shoreline south of Milwaukee. Visibility at the Racine Airport is 1/2-mile in moderate snow. The leading edge of this next snow plume will be working its way into the Waukegan area soon and then progress south into Chicago later this morning.