Much of the Chicago area on Wednesday will feel the effects of weakened Tropical Depression Alberto, which dumped heavy rain on the South after its Memorial Day landfall on the Gulf Coast.
As Alberto continues to travel north, scattered widespread showers and possible thunderstorms are expected to move into the area this afternoon and early evening with moderate to heavy rain.
In connection with the storm, the National Weather Service has issued a Flood Warning for urban areas and small stremas in numerous Illinois counties.
All of Kendall, Lake, DeKalb, Kane, McHenry, and DuPage counties are listed under the warning, which is in effect until 9:45 p.m. Central. Northwestern Will Conty and northwestern portions of Cook County are also under the warning, which is effective immediately.
Grundy County in northeastern Illinois is also included in the warning, as are eastern Livingston and western Kankakee counties.
Some areas could see between an inch and two inches of rain, elevating the risk of localized flooding. The National Weather Service says that as much as one to two inches of rain have already fallen in some of the affected areas.
The heaviest rainfall totals are expected along I-55 and east of the expressway.
Though evening storms are not expected to be severe, they may produce wind gusts of over 40 mph.
Highs in the upper 70s to low 80s will feel cooler along the lakefront, and winds will vary as remnants of Alberto move east of the area.
Most of the rain likely will be out of the area by late Wednesday night, giving way to breezy and hot conditions Thursday as temperatures warm to around 90 degrees.
The warmth will be short-lived. A cold front is expected to move in early Friday, producing much cooler conditions for the weekend.
Saturday and Sunday high temperatures look to top out in the upper 70s with cooler temps along the lakefront and a few scattered showers possible.