Stormy Weekend Ahead: Severe Weather Threat in Chicago and Eastern Iowa.

A severe thunderstorm watch has been issued for several counties across the Chicago area, including LaSalle, Grundy, Kankakee, Kendall and Will counties in Illinois, as well as Newton and Jasper counties in Indiana until midnight. Most of northern Illinois is at a “marginal” risk of severe weather on Sunday night, as is most of northwestern Indiana. The storms are expected to trudge slowly across the region, moving to the east at around 30 miles per hour, according to forecast models.