The Storm Prediction Center has areas southeast of I-55 in an "Enhanced Risk," this is a level 3 of 5 on their severe risk scale. Locations near and along I-55 are in a "Slight Risk" (level 2 of 5), and then north and northwest portions of Chicagoland are in a "Marginal Risk" (level 1/5).

A band of severe weather brought tornado warnings to the Chicago area and parts of northern Illinois on Wednesday, downing power lines and knocking power out to homes. Thursday morning's commute will be chilly,

Flights have been halted by the FAA at Chicago's O'Hare and Midway airports due to severe weather in Illinois.