A broken line of showers and storms is expected to move through northern Illinois through mid-night, with thunderstorms expected to occur north of I-55 and scattered showers throughout the day. The National Weather Service warns of potential damaging thunderstorm winds between 4 and 9 p.m. Showers and storms are expected to continue, with potential downpours leading to slowed driving and gusty winds that could topple small branches or move light objects. A wind advisory is in effect for DuPage, Kane, Kendall, Lake, McHenry and northern Cook counties. A winter weather advisory will be in place for DeKalb, DuNap, Downers Grove, Aurora, Naperville, Wheaton, Des Plaines, Crystal Lake, Oswego, and Algonquin counties, with total snow accumulations expected to be between 2 and 3 inches. A blizzard warning is also in effect, with wind gusts up to 50 mph expected.