National Weather Service forecasters on Thursday evening issued Tornado Watches for counties west of Chicago as storms continued their march toward the city.
Grundy, Kendall and LaSalle counties were placed under a Tornado Watch until 12 a.m. Friday.
The threat of severe storms comes just one day after several southwest suburbs saw softball-sized hail and storms with high winds.
The thunderstorms could bring golf ball-sized hail, wind gusts in excess of 60 mph, heavy rainfall and possibly even a tornado.
Scattered storms were possible during the morning hours, with more storms expected to develop by the afternoon and continue through the evening, particularly in areas along and north of Interstate 80.
The storms will gradually move northeast with the most severe weather threat coming during the afternoon and evening. There is a possibility for a couple of tornadoes.
Temperatures will range from the 60s to the 90s across the area Thursday with areas south and west warming significantly and areas along the lakefront experiencing cooler temps.
Thunderstorms are also likely Friday with another chance for severe weather. The chance for storms returns Saturday night and continues through early next week.