The National Weather Service says there is potential for an ice storm on Wednesday that could cause hazardous travel conditions in Lake and McHenry counties.
The National Weather Service (NWS) issued a hazardous weather outlook on Monday for portions of north-central and northeast Illinois.
The outlook includes Lake County and McHenry County.
A large storm system is expected to move through the Great Lakes Wednesday through Thursday, the NWS said.
A wintry mix including accumulating ice may materialize near the Illinois-Wisconsin border. Heavy snow is expected in Wisconsin.
Periods of heavy rain with thunderstorms may occur along and south of Interstate 80, the NWS said.
Flash flooding is possible due to the heavy rainfall.
The ice accumulations may cause tree damage and local power outages.
Gusty west winds are expected areawide all day on Thursday. Westerly winds may gust over 40 mph.
The NWS has not yet provided the exact timing for the inclement weather on Wednesday.