Chicago Weather Alert: Winter Storm Watch Taking Effect Tuesday Night; 6+ Inches Of Snow Possible By Thursday

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CHICAGO (CBS) — Chicagoland is in the eye of another winter storm, which will start to take shape early Wednesday and last through Thursday.

Monday will be a mostly sunny day with temperatures near 33 degrees. Tuesday will be a bit warmer, but then rain develops later in the day and turns to snow early Wednesday.

Models currently predict the heaviest snow will fall just south of Chicago, but the exact track of the storm is still unsettled. First Alert Weather models show most of the area is expected to see significant snow, anywhere from 6 to 12 inches, with some areas getting as much as 18 inches. However, it is still to early to predict precise snow amounts.

A Winter Storm Watch has been issued for Tuesday evening through Thursday evening.

Currently all models show our south and east communities will get the heaviest snow, with lesser amounts north and west of the I-55. Any shift in the track could bury the city with more snow.

Two systems are expected to piggy back off each other. The first system will begin to develop Thursday afternoon or evening with rain, before cold air arrives and winds shift from the southwest to the northwest, and temperatures tumble from the 40s to the 20s by late evening, and rain changes to snow overnight.

Snow will continue through the first half of Wednesday, before slowing in the afternoon.