Update 5:30AM CST Saturday...
The Winter Storm Warnings/Advisories for up to 9-inches of heavy wet snow continue in effect for many counties south and west of Chicago this Saturday morning until later this evening. The Winter Storm Warning (pink-shaded areas on the highlighted map) for 4 to 9-inches of snow remains in effect for Lee, LaSalle, Grundy, Livingston, Ford and Iroquois Counties. The Winter Weather Advisory (purple-shaded area areas on the highlighted map) for anywhere from 2 to 6-inches of snow continues for counties adjacent to the Counties under the warnings.
There will be a very sharp cutoff in the snowfall as you approach Chicago with the city and immediate surrounding suburbs receiving very little or no snow with this system. Strong drying easterly winds will continue. Snowfall could change to a light freezing rain before it ends from the north and west this evening. As stated earlier, this is a very water-laden, heavy wet snow..difficult to move and travel conditions will be hazardous. Note warnings are in effect to the west and south of our warned areas in Illinois.
Update 4PM CDT...
A Winter Storm Warning (pink-shaded area on the highlighted map below) for 4 to 9-inches of snow remains in effect for tonight through Saturday afternoon in Lee, LaSalle, Livingston, Grundy and Ford Counties to the far west and south of Chicago. Winter Weather Advisories for up to 4-inches of snow are in effect tonight through Saturday afternoon for counties adjacent to the Warned counties closer-in west and south of Chicago (purple-shaded area on the highlighted map below).
A moisture-laden heavy wet snow is expected to spread into our area from the west later tonight, making travel very difficult, as the snow adds up and complicated by strengthening east winds gusting over 30 miles per hour. Individuals will find moving the snow by hand very strenuous and should be attempted as a last resort.
Light snow will likely occur across a good portion of the remaining non-warned Chicago area, including the city of Chicago, but snow will melt as it falls with accumulations likely from just a trace to no more than an inch or two in most cases.
Snow will end from the north and west later Saturday afternoon and evening.
CHICAGO -- A Winter Storm Warning for 5 to 9-inches of snow from this Friday evening into Saturday afternoon is in effect for westernmost Lee, LaSalle and Livingston Counties (pink-shaded areas on the highlighted map). Waiting for a more defined track of the storm center, the Winter Storm Watch calling for 3 to 6-inches of snow later tonight into Saturday afternoon remains in effect for counties adjacent to the warned area to the west and south of Chicago (blue-shaded area on the highlighted map).
With a drying east wind, there is expected to be a sharp cut-off in precipitation with minor snowfall amounts expected in Chicago itself and 1 to 3-inches across closer-in counties just to the west and south of Chicago. Lesser snowfall is also expected to the north and northwest of Chicago.
Where it occurs in significant amounts, this will be a moisture-laden heavy wet snow, difficult to move, and along with strong easterly winds gusting over 30 miles per hour causing very hazardous travel conditions.