Chicago & Northwest Indiana Weather Alert: Lake-Effect Snow Possible Sunday Night into Monday
Chicago & Northwest Indiana — Residents across the Chicago area and Northwest Indiana should prepare for a dramatic shift in weather as a strong blast of cold air sweeps across the region late Sunday, setting the stage for possible lake-effect snow through Monday morning.
Sudden Cold Brings First Winter Taste
After several mild November days, temperatures are expected to drop sharply Sunday evening as the cold front arrives from the northwest. The frigid air moving over Lake Michigan’s warmer waters could trigger narrow snow bands that bring bursts of heavy snow, gusty winds, and reduced visibility overnight.
While total snowfall amounts are still uncertain, areas close to the lake and in Northwest Indiana could experience the highest accumulation, with a chance of 2 to 4 inches in spots. Chicago’s southern and eastern neighborhoods may also see light to moderate snow if bands drift inland.
Expected Timeline
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Sunday Afternoon: Clouds increase and temperatures begin to fall.
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Sunday Evening: Cold air sweeps in; rain may mix with or change to snow near the lake.
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Sunday Night: Strongest period for lake-effect snow development.
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Monday Morning: Slippery conditions possible during the early commute.
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Monday Afternoon: Gradual clearing and a return to drier weather.
What to Watch For
This type of snow system can be highly localized — meaning one community could see several inches of snow while another nearby area remains nearly dry. Strong winds could also create blowing snow, reducing visibility in open areas and along major highways.
Safety and Preparation Tips
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Plan Ahead: Check forecasts and road conditions before heading out Sunday night or Monday morning.
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Drive Cautiously: Slow down, keep extra distance between vehicles, and be mindful of icy bridges and ramps.
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Protect Your Vehicle: Make sure tires are properly inflated and winter-ready.
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Bundle Up: With wind chills dropping into the 20s, dress in warm layers if you’re spending time outdoors.
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Stay Alert: Weather conditions can change quickly during lake-effect events — keep an eye on local updates.
Looking Ahead
The cold pattern is expected to last only briefly, with temperatures gradually rebounding by midweek. Still, this system serves as a reminder that winter is right around the corner for the Great Lakes region.
This early-season chill marks the first real hint of winter for Chicago and Northwest Indiana. Even a light coating of lake-effect snow can lead to slick roads and travel disruptions. Preparing now — from checking vehicles to adjusting travel plans — will help residents stay safe and ready for whatever winter brings next.
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