CHICAGO (CBS) — Severe storms set up south of the Chicago Wednesday afternoon and evening.
A tornado watch was issued for Grundy and Kankakee counties, as well as Ford, Livingston, and Iroquois counties to the south of the Chicago area, but has since expired.

(Credit: CBS 2)

(Credit: CBS 2)
Heavy downpours were expected late into Wednesday night, especially south of I-80 and into Northwest Indiana.

(Credit: CBS 2)
It will be drying out Thursday with highs in the mid-80s. Friday, the heat and humidity build as a southwesterly wind flow develops.

(Credit: CBS 2)

(Credit: CBS 2)
There are no real rain chances the next few days; only a stray storm chance over the weekend and slightly higher chances to start next week.

(Credit: CBS 2)
Some big-time heat is building this weekend with highs in the mid-90s. Factor in the humidity, and the heat index values will reach 100-105 degrees.