A severe thunderstorm watch was issued for all of the Chicago area late Saturday afternoon as the region remained under a chance for strong storms and heavy rains, according to the National Weather Service.
The watch was issued at approximately 3:30 p.m. and is slated to remain in effect until 10 p.m.
A severe thunderstorm warning was issued for Kankakee and Will counties in Illinois, as well as Lake County in Indiana, until 7 p.m. At approximately 6 p.m., severe thunderstorms were located along a line extending from Griffith to near Crete and Monee, moving southeast at 25 miles per hour, forecasters said.
LaPorte and Porter counties in Indiana also remain under severe thunderstorm warnings until 7 p.m. A separate severe thunderstorm warning was issued for southeastern Kankakee County in Illinois and portions of Jasper and Newton counties in Indiana until 7:15 p.m.
A cold front is expected to move in sometime through evening hours, bringing a chance for showers and storms, some of which could be strong to severe and produce gusty winds, hail and heavy rain. Along with the possible storms, the Chicago area could see a "dangerously" high heat index, with values reaching near 100 degrees.
Sunday will remain hot in the upper 80s and low 90s, but a light breeze will keep it a bit cooler near the lakefront. However, there is a chance of a storm south of the Interstate 80 corridor.
Next week is expected to stay hot and moderately humid with upper 80s and low 90s. While there are limited chances for showers and storms, a few are likely as the area gradually transitions to cooler, less humid conditions late in the week.