Ice Storm Warning for Chicago and Western Suburbs. Ice Advisory for South, Southwestern Suburbs and Northwest Indiana
A threat of freezing rain and significant ice accumulation exists across parts of northern IL and northwest IN tonight. Freezing rain, possibly mixed with sleet north, is expected to develop into the I-39 corridor of north central IL late this afternoon, then spread east across the remainder of the area early this evening. While temperatures will likely warm above freezing by midnight from Pontiac to Kankakee and Gary, areas farther north will see freezing rain persist through the night. Ice accumulations ranging from 0.1″ to 0.4″ are possible, which may lead to hazardous travel conditions as well as tree and power line damage.