MIDWEST — Forecasters are closely monitoring a developing winter system expected to bring accumulating snow Sunday evening into Monday morning across portions of Iowa, Missouri, Illinois, and Indiana, with the heaviest snowfall currently projected across central Illinois and areas south of Interstate 80.
Latest model ensembles show a defined swath of moderate snowfall stretching from eastern Iowa and northern Missouri through central Illinois and into Indiana.
Snow Trends Shift North After Earlier Southward Drift
Over the past several days, forecast guidance had nudged the snow band farther south. However, overnight model runs have adjusted the corridor back northward, now including portions of northern Illinois within the accumulating snow zone.
Despite that northward adjustment, the strongest signal for heavier totals remains focused across:
- Central Illinois
- South of I-80 in northern Illinois
- Parts of Indiana
- Eastern Iowa and northern Missouri
Forecasters stress that while details may still change, confidence is increasing in a measurable snowfall event across the region.
2–5 Inches Possible in Central Illinois
Current projections indicate central Illinois could see 2 to 5 inches of snowfall, with moderate probabilities of exceeding 2.5 inches across a broad area…