A winter storm watch is in effect for much of Iowa and Wisconsin and areas just to the
north and northwest of Chicago. The first effects of low pressure developing in the
Texas Panhandle will be felt Monday morning over much of the Midwest.
A thin layer of ice may form on sidewalks and roads. As strong southerly winds aloft
pull warm, moist air over the top of subfreezing air close to the ground, light rain or
drizzle forming in the warmer air is expected to fall into the colder air below and freeze
on contact. Scattered sleet showers are also possible. Temperatures rising into the
lower 30s should minimize the ice threat Monday afternoon in most areas.
BRUNT OF STORM FELT TUESDAY
The low is projected to track northeast through southern Illinois and central Indiana
into northwestern Ohio. As the low approaches in the morning, rain should spread
north into Chicago. As the system moves away, rain will change to snow as winds shift
northeast, pulling colder air into northern Illinois while entraining moisture off of Lake
Michigan. A heavy, wet snow could accumulate to several inches over the Chicago area
Tuesday night and early Wednesday.
--By Paul Dailey, WGN Weather Center Meteorologist
