Scattered showers are possible Wednesday morning, but once we hit the afternoon, storms return to the forecast. The window of opportunity for severe storms will be between 1 p.m. and 9 p.m. The main threat for Chicago will be between 4 p.m. and 6 p.m. Damaging wind gusts, hail and brief isolated tornadoes will be possible.

Dramatic temperature swings and more rounds of serious storms are expected to roil Chicago much of the week, according to the National Weather Service.