It will remain in place until 11 a.m. Saturday.
Many places in central IL could see between 2-5 inches of snow, with locally higher amounts.
Plan on slippery road conditions. While we aren't 100% out of the blue for at least seeing snowflakes between Sunday night and Monday, the heavy accumulation potential is extremely small here.
At this time, about an inch to possibly 3 inches of snowfall accumulation is expected for the region, with several inches more possible in areas north and west of I-84. Tuesday features a chance for snow changing to mix for portions of the viewing area, which will make for tough travel.
By Sunday afternoon, this system moves into the Central Plains, bringing the threat for snow and ice on the northern side of the system, and rain/storms developing on the eastern side of the system. Snow will be increasing in the morning hours, and will be heavy at times through late Sunday night/early Monday morning. Snow, sleet, freezing rain, and rain. "Walsenburg could see up to 10" of snow by Monday morning, with snow most of the day on Sunday.
The weather service's Sunday morning forecast discussion called the storm a "complex winter-weather event" that is likely to include two phases with a lull in precipitation on Monday night.
Closer inspection of the atmospheric column depicted by computer models shows a "warm" layer of air - above freezing - between 2,000 feet and 7,000 feet above the ground mid-Monday morning through Monday evening.
Mixed precipitation expected with the best chance of freezing rain being south of Interstate 70. "Snow totals from 3-6". By the 5 p.m. rush hour, more than half the state could be seeing snow, while the southern half of the state could be getting a wintry mix, according to the weather service. Snow will pick up by the afternoon, with snow continuing through early Monday morning.