Chicago NWS
The models and their ensembles are coming into better agreement
with a period of snow to spread across the area Thursday night
into Friday morning. While there isn`t much qpf, perhaps no more
than 0.1 to 0.15 of an inch, it will be so cold that snow ratios
of 15:1 to perhaps 20:1 are likely, allowing for a fluffy snow.
Given these trends, have bumped up pops to categorical with at
least a few inches of snow possible across the entire area. Given
how cold both the ground and air temperatures will be, the snow
will quickly accumulate. Winds will shift to the northwest as
this snow is ending and increase and gust, possibly into the 25-30
mph range. So if we do get a few inches of new fluffy snow,
blowing/low drifting snow will be possible.